diff --git a/src/app/puzzle/xml/vplayoutfilewriter.cpp b/src/app/puzzle/xml/vplayoutfilewriter.cpp
index 37e4f04ca..3fd969cdd 100644
--- a/src/app/puzzle/xml/vplayoutfilewriter.cpp
+++ b/src/app/puzzle/xml/vplayoutfilewriter.cpp
@@ -44,7 +44,7 @@ template <class T>
 auto NumberToString(T number) -> QString
 {
     const QLocale locale = QLocale::c();
-    return locale.toString(number, 'g', 12).remove(locale.groupSeparator());
+    return locale.toString(number, 'g', 12).remove(LocaleGroupSeparator(locale));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/app/puzzle/xml/vplayoutfilewriter.h b/src/app/puzzle/xml/vplayoutfilewriter.h
index 65014875f..66bcb889f 100644
--- a/src/app/puzzle/xml/vplayoutfilewriter.h
+++ b/src/app/puzzle/xml/vplayoutfilewriter.h
@@ -36,8 +36,8 @@
 #include <ciso646>
 
 #include "../vmisc/literals.h"
-#include "../vmisc/defglobal.h"
 #include "../layout/layoutdef.h"
+#include "../qmuparser/qmudef.h"
 
 class VPLayout;
 class VPSheet;
@@ -91,7 +91,7 @@ void VPLayoutFileWriter::SetAttribute(const QString &name, const T &value)
 {
     // See specification for xs:decimal
     const QLocale locale = QLocale::c();
-    writeAttribute(name, locale.toString(value).remove(locale.groupSeparator()));
+    writeAttribute(name, locale.toString(value).remove(LocaleGroupSeparator(locale)));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.cpp b/src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.cpp
index d35c25040..b57a5fda4 100644
--- a/src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.cpp
+++ b/src/app/tape/dialogs/configpages/tapepreferencesconfigurationpage.cpp
@@ -34,6 +34,7 @@
 #if QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
 #include "../vmisc/backport/qoverload.h"
 #endif // QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 TapePreferencesConfigurationPage::TapePreferencesConfigurationPage(QWidget *parent)
@@ -163,7 +164,7 @@ void TapePreferencesConfigurationPage::changeEvent(QEvent *event)
 //---------------------------------------------------------------------------------------------------------------------
 void TapePreferencesConfigurationPage::RetranslateUi()
 {
-    ui->osOptionCheck->setText(tr("With OS options") + QStringLiteral(" (%1)").arg(QLocale().decimalPoint()));
+    ui->osOptionCheck->setText(tr("With OS options") + QStringLiteral(" (%1)").arg(LocaleDecimalPoint(QLocale())));
 
     {
     const auto code = qvariant_cast<QString>(ui->systemCombo->currentData());
diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index bf2a59014..65b28c105 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -760,11 +760,11 @@ auto TMainWindow::eventFilter(QObject *object, QEvent *event) -> bool
             {
                 if (VAbstractApplication::VApp()->Settings()->GetOsSeparator())
                 {
-                    plainTextEdit->insertPlainText(QLocale().decimalPoint());
+                    plainTextEdit->insertPlainText(LocaleDecimalPoint(QLocale()));
                 }
                 else
                 {
-                    plainTextEdit->insertPlainText(QLocale::c().decimalPoint());
+                    plainTextEdit->insertPlainText(LocaleDecimalPoint(QLocale::c()));
                 }
                 return true;
             }
@@ -779,11 +779,11 @@ auto TMainWindow::eventFilter(QObject *object, QEvent *event) -> bool
             {
                 if (VAbstractApplication::VApp()->Settings()->GetOsSeparator())
                 {
-                    textEdit->insert(QLocale().decimalPoint());
+                    textEdit->insert(LocaleDecimalPoint(QLocale()));
                 }
                 else
                 {
-                    textEdit->insert(QLocale::c().decimalPoint());
+                    textEdit->insert(LocaleDecimalPoint(QLocale::c()));
                 }
                 return true;
             }
diff --git a/src/app/valentina/dialogs/configpages/preferencesconfigurationpage.cpp b/src/app/valentina/dialogs/configpages/preferencesconfigurationpage.cpp
index f8fb7a85c..5e5f1bd74 100644
--- a/src/app/valentina/dialogs/configpages/preferencesconfigurationpage.cpp
+++ b/src/app/valentina/dialogs/configpages/preferencesconfigurationpage.cpp
@@ -35,6 +35,7 @@
 #if QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
 #include "../vmisc/backport/qoverload.h"
 #endif // QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
+#include "../qmuparser/qmudef.h"
 
 #include <QDir>
 #include <QDirIterator>
@@ -281,7 +282,7 @@ void PreferencesConfigurationPage::InitUnits()
 //---------------------------------------------------------------------------------------------------------------------
 void PreferencesConfigurationPage::RetranslateUi()
 {
-    ui->osOptionCheck->setText(tr("With OS options") + QStringLiteral(" (%1)").arg(QLocale().decimalPoint()));
+    ui->osOptionCheck->setText(tr("With OS options") + QStringLiteral(" (%1)").arg(LocaleDecimalPoint(QLocale())));
 
     {
     ui->unitCombo->blockSignals(true);
diff --git a/src/app/valentina/dialogs/dialogfinalmeasurements.cpp b/src/app/valentina/dialogs/dialogfinalmeasurements.cpp
index 91c699491..59fb81d9a 100644
--- a/src/app/valentina/dialogs/dialogfinalmeasurements.cpp
+++ b/src/app/valentina/dialogs/dialogfinalmeasurements.cpp
@@ -147,11 +147,11 @@ auto DialogFinalMeasurements::eventFilter(QObject *object, QEvent *event) -> boo
             {
                 if (VAbstractApplication::VApp()->Settings()->GetOsSeparator())
                 {
-                    textEdit->insert(QLocale().decimalPoint());
+                    textEdit->insert(LocaleDecimalPoint(QLocale()));
                 }
                 else
                 {
-                    textEdit->insert(QLocale::c().decimalPoint());
+                    textEdit->insert(LocaleDecimalPoint(QLocale::c()));
                 }
                 return true;
             }
diff --git a/src/app/valentina/dialogs/dialogincrements.cpp b/src/app/valentina/dialogs/dialogincrements.cpp
index 0a84293eb..2a453ef9b 100644
--- a/src/app/valentina/dialogs/dialogincrements.cpp
+++ b/src/app/valentina/dialogs/dialogincrements.cpp
@@ -1933,11 +1933,11 @@ auto DialogIncrements::eventFilter(QObject *object, QEvent *event) -> bool
             {
                 if (VAbstractApplication::VApp()->Settings()->GetOsSeparator())
                 {
-                    textEdit->insert(QLocale().decimalPoint());
+                    textEdit->insert(LocaleDecimalPoint(QLocale()));
                 }
                 else
                 {
-                    textEdit->insert(QLocale::c().decimalPoint());
+                    textEdit->insert(LocaleDecimalPoint(QLocale::c()));
                 }
                 return true;
             }
diff --git a/src/libs/ifc/xml/vabstractpattern.cpp b/src/libs/ifc/xml/vabstractpattern.cpp
index 9b14c4be8..025532c19 100644
--- a/src/libs/ifc/xml/vabstractpattern.cpp
+++ b/src/libs/ifc/xml/vabstractpattern.cpp
@@ -275,7 +275,7 @@ template <class T>
 auto NumberToString(T number) -> QString
 {
     const QLocale locale = QLocale::c();
-    return locale.toString(number, 'g', 12).remove(locale.groupSeparator());
+    return locale.toString(number, 'g', 12).remove(LocaleGroupSeparator(locale));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/ifc/xml/vdomdocument.h b/src/libs/ifc/xml/vdomdocument.h
index 2aea0f136..0aa56ba77 100644
--- a/src/libs/ifc/xml/vdomdocument.h
+++ b/src/libs/ifc/xml/vdomdocument.h
@@ -47,6 +47,7 @@
 #include "../vmisc/diagnostic.h"
 #endif // QT_VERSION < QT_VERSION_CHECK(5, 5, 0)
 #include "../vmisc/literals.h"
+#include "../qmuparser/qmudef.h"
 
 class QDomElement;
 class QDomNode;
@@ -186,7 +187,7 @@ inline void VDomDocument::SetAttribute(QDomElement &domElement, const QString &n
 {
     // See specification for xs:decimal
     const QLocale locale = QLocale::c();
-    domElement.setAttribute(name, locale.toString(value).remove(locale.groupSeparator()));
+    domElement.setAttribute(name, locale.toString(value).remove(LocaleGroupSeparator(locale)));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/qmuparser/qmudef.cpp b/src/libs/qmuparser/qmudef.cpp
index f97309c4d..72a2fd802 100644
--- a/src/libs/qmuparser/qmudef.cpp
+++ b/src/libs/qmuparser/qmudef.cpp
@@ -241,8 +241,8 @@ qmusizetype ReadVal(const QString &formula, qreal &val, const QLocale &locale, c
         {
             // Convert to C locale
             QLocale cLocale(QLocale::C);
-            const QChar cDecimal = cLocale.decimalPoint();
-            const QChar cThousand = cLocale.groupSeparator();
+            const QChar cDecimal = LocaleDecimalPoint(cLocale);
+            const QChar cThousand = LocaleGroupSeparator(cLocale);
             if (locale != cLocale && (cDecimal != decimal || cThousand != thousand))
             {
                 if (decimal == cThousand)
@@ -297,24 +297,24 @@ QString NameRegExp()
 
         for(const auto &locale : allLocales)
         {
-            if (not positiveSigns.contains(locale.positiveSign()))
+            if (not positiveSigns.contains(LocalePositiveSign(locale)))
             {
-                positiveSigns.append(locale.positiveSign());
+                positiveSigns.append(LocalePositiveSign(locale));
             }
 
-            if (not negativeSigns.contains(locale.negativeSign()))
+            if (not negativeSigns.contains(LocaleNegativeSign(locale)))
             {
-                negativeSigns.append(locale.negativeSign());
+                negativeSigns.append(LocaleNegativeSign(locale));
             }
 
-            if (not decimalPoints.contains(locale.decimalPoint()))
+            if (not decimalPoints.contains(LocaleDecimalPoint(locale)))
             {
-                decimalPoints.append(locale.decimalPoint());
+                decimalPoints.append(LocaleDecimalPoint(locale));
             }
 
-            if (not groupSeparators.contains(locale.groupSeparator()))
+            if (not groupSeparators.contains(LocaleGroupSeparator(locale)))
             {
-                groupSeparators.append(locale.groupSeparator());
+                groupSeparators.append(LocaleGroupSeparator(locale));
             }
         }
 
@@ -353,3 +353,243 @@ qmusizetype FindFirstNotOf(const QString &string, const QString &chars, qmusizet
 
     return -1;
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+bool SupportedLocale(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    return locale.positiveSign().size() == 1 &&
+                locale.negativeSign().size() == 1 &&
+                locale.toString(0).size() == 1 &&
+                locale.toString(1).size() == 1 &&
+                locale.toString(2).size() == 1 &&
+                locale.toString(3).size() == 1 &&
+                locale.toString(4).size() == 1 &&
+                locale.toString(5).size() == 1 &&
+                locale.toString(6).size() == 1 &&
+                locale.toString(7).size() == 1 &&
+                locale.toString(8).size() == 1 &&
+                locale.toString(9).size() == 1 &&
+                locale.exponential().size() == 1 &&
+                locale.decimalPoint().size() == 1 &&
+                locale.groupSeparator().size() == 1;
+#else
+    return true;
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocalePositiveSign(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.positiveSign();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().positiveSign().front();
+#else
+    return locale.positiveSign();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleNegativeSign(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.negativeSign();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().negativeSign().front();
+#else
+    return locale.negativeSign();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign0(const QLocale &locale)
+{
+    const QString sign = locale.toString(0);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'0'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign1(const QLocale &locale)
+{
+    const QString sign = locale.toString(1);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'1'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign2(const QLocale &locale)
+{
+    const QString sign = locale.toString(2);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'2'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign3(const QLocale &locale)
+{
+    const QString sign = locale.toString(3);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'3'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign4(const QLocale &locale)
+{
+    const QString sign = locale.toString(4);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'4'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign5(const QLocale &locale)
+{
+    const QString sign = locale.toString(5);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'5'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign6(const QLocale &locale)
+{
+    const QString sign = locale.toString(6);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'6'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign7(const QLocale &locale)
+{
+    const QString sign = locale.toString(7);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'7'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign8(const QLocale &locale)
+{
+    const QString sign = locale.toString(8);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'8'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleSign9(const QLocale &locale)
+{
+    const QString sign = locale.toString(9);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'9'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleExpUpper(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.exponential();
+    if (sign.size() == 1)
+    {
+        return sign.front().toUpper();
+    }
+
+    return QLocale::c().exponential().front().toUpper();
+#else
+    return locale.exponential().toUpper();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleExpLower(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.exponential();
+    if (sign.size() == 1)
+    {
+        return sign.front().toLower();
+    }
+
+    return QLocale::c().exponential().front().toLower();
+#else
+    return locale.exponential().toLower();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleDecimalPoint(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.decimalPoint();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().decimalPoint().front();
+#else
+    return locale.decimalPoint();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar LocaleGroupSeparator(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.groupSeparator();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().groupSeparator().front();
+#else
+    return locale.groupSeparator();
+#endif
+}
diff --git a/src/libs/qmuparser/qmudef.h b/src/libs/qmuparser/qmudef.h
index 19a3e7f93..23eaebed9 100644
--- a/src/libs/qmuparser/qmudef.h
+++ b/src/libs/qmuparser/qmudef.h
@@ -105,23 +105,42 @@ class QLocale;
 class QChar;
 class QString;
 
-#define INIT_LOCALE_VARIABLES(locale)                          \
-const QChar positiveSign   = (locale).positiveSign();          \
-const QChar negativeSign   = (locale).negativeSign();          \
-const QChar sign0          = (locale).toString(0).at(0);       \
-const QChar sign1          = (locale).toString(1).at(0);       \
-const QChar sign2          = (locale).toString(2).at(0);       \
-const QChar sign3          = (locale).toString(3).at(0);       \
-const QChar sign4          = (locale).toString(4).at(0);       \
-const QChar sign5          = (locale).toString(5).at(0);       \
-const QChar sign6          = (locale).toString(6).at(0);       \
-const QChar sign7          = (locale).toString(7).at(0);       \
-const QChar sign8          = (locale).toString(8).at(0);       \
-const QChar sign9          = (locale).toString(9).at(0);       \
-const QChar expUpper       = (locale).exponential().toUpper(); \
-const QChar expLower       = (locale).exponential().toLower(); \
-const QChar decimalPoint   = (locale).decimalPoint();          \
-const QChar groupSeparator = (locale).groupSeparator()         \
+QMUPARSERSHARED_EXPORT auto SupportedLocale(const QLocale &locale) -> bool;
+
+QMUPARSERSHARED_EXPORT auto LocalePositiveSign(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleNegativeSign(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign0(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign1(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign2(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign3(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign4(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign5(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign6(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign7(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign8(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleSign9(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleExpUpper(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleExpLower(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleDecimalPoint(const QLocale &locale) -> QChar;
+QMUPARSERSHARED_EXPORT auto LocaleGroupSeparator(const QLocale &locale) -> QChar;
+
+#define INIT_LOCALE_VARIABLES(locale)                        \
+const QChar positiveSign   = LocalePositiveSign((locale));   \
+const QChar negativeSign   = LocaleNegativeSign((locale));   \
+const QChar sign0          = LocaleSign0((locale));          \
+const QChar sign1          = LocaleSign1((locale));          \
+const QChar sign2          = LocaleSign2((locale));          \
+const QChar sign3          = LocaleSign3((locale));          \
+const QChar sign4          = LocaleSign4((locale));          \
+const QChar sign5          = LocaleSign5((locale));          \
+const QChar sign6          = LocaleSign6((locale));          \
+const QChar sign7          = LocaleSign7((locale));          \
+const QChar sign8          = LocaleSign8((locale));          \
+const QChar sign9          = LocaleSign9((locale));          \
+const QChar expUpper       = LocaleExpUpper((locale));       \
+const QChar expLower       = LocaleExpLower((locale));       \
+const QChar decimalPoint   = LocaleDecimalPoint((locale));   \
+const QChar groupSeparator = LocaleGroupSeparator((locale));
 
 QMUPARSERSHARED_EXPORT QString NameRegExp();
 
diff --git a/src/libs/qmuparser/qmuformulabase.cpp b/src/libs/qmuparser/qmuformulabase.cpp
index 872ed396f..9bd0b3812 100644
--- a/src/libs/qmuparser/qmuformulabase.cpp
+++ b/src/libs/qmuparser/qmuformulabase.cpp
@@ -147,8 +147,8 @@ void QmuFormulaBase::SetSepForTr(bool osSeparator, bool fromUser)
         setCNumbers(not osSeparator);
         if (osSeparator)
         {
-            setDecimalPoint(loc.decimalPoint());
-            setThousandsSeparator(loc.groupSeparator());
+            setDecimalPoint(LocaleDecimalPoint(loc));
+            setThousandsSeparator(LocaleGroupSeparator(loc));
             return;
         }
     }
diff --git a/src/libs/qmuparser/qmuparser.cpp b/src/libs/qmuparser/qmuparser.cpp
index b678f1044..e2b6052da 100644
--- a/src/libs/qmuparser/qmuparser.cpp
+++ b/src/libs/qmuparser/qmuparser.cpp
@@ -507,7 +507,7 @@ void QmuParser::InitConst()
  */
 void QmuParser::InitOprt()
 {
-    DefineInfixOprt(m_locale.negativeSign(), UnaryMinus);
+    DefineInfixOprt(LocaleNegativeSign(m_locale), UnaryMinus);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/qmuparser/qmuparserbase.cpp b/src/libs/qmuparser/qmuparserbase.cpp
index 3417354c4..fc3bdd9e6 100644
--- a/src/libs/qmuparser/qmuparserbase.cpp
+++ b/src/libs/qmuparser/qmuparserbase.cpp
@@ -64,8 +64,8 @@ const QStringList QmuParserBase::c_DefaultOprt = QStringList()<< "<=" << ">=" <<
  */
 QmuParserBase::QmuParserBase()
     : m_locale(QLocale::c()),
-      m_decimalPoint(QLocale::c().decimalPoint()),
-      m_thousandsSeparator(QLocale::c().groupSeparator()),
+      m_decimalPoint(LocaleDecimalPoint(QLocale::c())),
+      m_thousandsSeparator(LocaleGroupSeparator(QLocale::c())),
       m_FunDef(),
       m_pTokenReader(),
       m_pParseFormula(&QmuParserBase::ParseString),
@@ -204,8 +204,8 @@ void QmuParserBase::Assign(const QmuParserBase &a_Parser)
 void QmuParserBase::ResetLocale()
 {
     setLocale(QLocale::c());
-    m_decimalPoint = m_locale.decimalPoint();
-    m_thousandsSeparator = m_locale.groupSeparator();
+    m_decimalPoint = LocaleDecimalPoint(m_locale);
+    m_thousandsSeparator = LocaleGroupSeparator(m_locale);
     m_cNumbers = false;
     SetArgSep(';');
 }
diff --git a/src/libs/qmuparser/qmutokenparser.cpp b/src/libs/qmuparser/qmutokenparser.cpp
index ad1ac9043..b94d4fb88 100644
--- a/src/libs/qmuparser/qmutokenparser.cpp
+++ b/src/libs/qmuparser/qmutokenparser.cpp
@@ -54,7 +54,6 @@ QmuTokenParser::QmuTokenParser()
  */
 QmuTokenParser::QmuTokenParser(const QString &formula, bool osSeparator,
                                bool fromUser, const QMap<QString, QString> &translatedFunctions)
-    :QmuFormulaBase()
 {
     InitCharSets();
     SetVarFactory(AddVariable, this);
diff --git a/src/libs/vmisc/compatibility.h b/src/libs/vmisc/compatibility.h
index 5f18c5cd4..31d043106 100644
--- a/src/libs/vmisc/compatibility.h
+++ b/src/libs/vmisc/compatibility.h
@@ -302,4 +302,20 @@ inline auto Insert(QMap<Key, T> &map1, const QMap<Key, T> &map2) -> void
 #endif
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+inline auto VLocaleCharacter(const QString &character) -> QChar
+{
+    Q_ASSERT(character.size() == 1);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+    return character.front();
+#else
+    return character.at(0);
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+inline auto VLocaleCharacter(const QChar &character) -> QChar
+{
+    return character;
+}
 #endif // COMPATIBILITY_H
diff --git a/src/libs/vpatterndb/vpiece.cpp b/src/libs/vpatterndb/vpiece.cpp
index 247767219..08fe9a3c3 100644
--- a/src/libs/vpatterndb/vpiece.cpp
+++ b/src/libs/vpatterndb/vpiece.cpp
@@ -1449,24 +1449,24 @@ auto VPiece::ShortNameRegExp() -> QString
 
         for(const auto &locale : allLocales)
         {
-            if (not positiveSigns.contains(locale.positiveSign()))
+            if (not positiveSigns.contains(LocalePositiveSign(locale)))
             {
-                positiveSigns.append(locale.positiveSign());
+                positiveSigns.append(LocalePositiveSign(locale));
             }
 
-            if (not negativeSigns.contains(locale.negativeSign()))
+            if (not negativeSigns.contains(LocaleNegativeSign(locale)))
             {
-                negativeSigns.append(locale.negativeSign());
+                negativeSigns.append(LocaleNegativeSign(locale));
             }
 
-            if (not decimalPoints.contains(locale.decimalPoint()))
+            if (not decimalPoints.contains(LocaleDecimalPoint(locale)))
             {
-                decimalPoints.append(locale.decimalPoint());
+                decimalPoints.append(LocaleDecimalPoint(locale));
             }
 
-            if (not groupSeparators.contains(locale.groupSeparator()))
+            if (not groupSeparators.contains(LocaleGroupSeparator(locale)))
             {
-                groupSeparators.append(locale.groupSeparator());
+                groupSeparators.append(LocaleGroupSeparator(locale));
             }
         }
 
diff --git a/src/libs/vpatterndb/vtranslatevars.cpp b/src/libs/vpatterndb/vtranslatevars.cpp
index c97d95d0b..b1ad3b3f6 100644
--- a/src/libs/vpatterndb/vtranslatevars.cpp
+++ b/src/libs/vpatterndb/vtranslatevars.cpp
@@ -39,10 +39,12 @@
 #include "../qmuparser/qmuparsererror.h"
 #include "../qmuparser/qmutokenparser.h"
 #include "../qmuparser/qmutranslation.h"
+#include "../qmuparser/qmudef.h"
 #include "../vpatterndb/vtranslatevars.h"
 #include "../vmisc/def.h"
 #include "../vmisc/vabstractapplication.h"
 #include "../vmisc/literals.h"
+#include "../vmisc/compatibility.h"
 #include "vtranslatemeasurements.h"
 #include "pmsystems.h"
 
@@ -677,7 +679,7 @@ void VTranslateVars::TranslateVarsFromUser(QString &newFormula, QMap<vsizetype,
             continue;
         }
 
-        if (tValues.at(i) == QLocale().negativeSign())
+        if (tValues.at(i) == LocaleNegativeSign(QLocale()))
         {// unary minus
             newFormula.replace(tKeys.at(i), 1, '-');
         }
@@ -774,7 +776,7 @@ void VTranslateVars::TranslateVarsToUser(QString &newFormula, QMap<vsizetype, QS
 
         if (tValues.at(i) == QChar('-'))
         {// unary minus
-            newFormula.replace(tKeys.at(i), 1, QLocale().negativeSign());
+            newFormula.replace(tKeys.at(i), 1, LocaleNegativeSign(QLocale()));
         }
     }
 }
@@ -801,9 +803,9 @@ void VTranslateVars::TranslateNumbersToUser(QString &newFormula, QMap<vsizetype,
 
             loc = QLocale();// To user locale
             QString dStr = loc.toString(d);// Number string in user locale
-            if (loc.groupSeparator().isSpace())
+            if (VLocaleCharacter(LocaleGroupSeparator(loc)).isSpace())
             {
-                dStr.replace(loc.groupSeparator(), QString());
+                dStr.replace(LocaleGroupSeparator(loc), QString());
             }
             newFormula.replace(nKeys.at(i), nValues.at(i).length(), dStr);
             const auto bias = nValues.at(i).length() - dStr.length();
diff --git a/src/libs/vpropertyexplorer/plugins/vstringproperty.cpp b/src/libs/vpropertyexplorer/plugins/vstringproperty.cpp
index 779ad8c80..33710c006 100644
--- a/src/libs/vpropertyexplorer/plugins/vstringproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vstringproperty.cpp
@@ -172,11 +172,11 @@ bool VPE::VStringProperty::eventFilter(QObject *object, QEvent *event)
             {
                 if (m_osSeparator)
                 {
-                    textEdit->insert(QLocale().decimalPoint());
+                    textEdit->insert(VPELocaleDecimalPoint(QLocale()));
                 }
                 else
                 {
-                    textEdit->insert(QLocale::c().decimalPoint());
+                    textEdit->insert(VPELocaleDecimalPoint(QLocale::c()));
                 }
                 return true;
             }
diff --git a/src/libs/vpropertyexplorer/vpropertydef.cpp b/src/libs/vpropertyexplorer/vpropertydef.cpp
new file mode 100644
index 000000000..c69db2ab2
--- /dev/null
+++ b/src/libs/vpropertyexplorer/vpropertydef.cpp
@@ -0,0 +1,245 @@
+/************************************************************************
+ **
+ **  @file   vpropertydef.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   10 2, 2023
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentina project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2023 Valentina project
+ **  <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#include "vpropertydef.h"
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocalePositiveSign(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.positiveSign();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().positiveSign().front();
+#else
+    return locale.positiveSign();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleNegativeSign(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.negativeSign();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().negativeSign().front();
+#else
+    return locale.negativeSign();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign0(const QLocale &locale)
+{
+    const QString sign = locale.toString(0);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'0'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign1(const QLocale &locale)
+{
+    const QString sign = locale.toString(1);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'1'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign2(const QLocale &locale)
+{
+    const QString sign = locale.toString(2);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'2'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign3(const QLocale &locale)
+{
+    const QString sign = locale.toString(3);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'3'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign4(const QLocale &locale)
+{
+    const QString sign = locale.toString(4);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'4'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign5(const QLocale &locale)
+{
+    const QString sign = locale.toString(5);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'5'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign6(const QLocale &locale)
+{
+    const QString sign = locale.toString(6);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'6'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign7(const QLocale &locale)
+{
+    const QString sign = locale.toString(7);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'7'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign8(const QLocale &locale)
+{
+    const QString sign = locale.toString(8);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'8'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleSign9(const QLocale &locale)
+{
+    const QString sign = locale.toString(9);
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return {'9'};
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleExpUpper(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.exponential();
+    if (sign.size() == 1)
+    {
+        return sign.front().toUpper();
+    }
+
+    return QLocale::c().exponential().front().toUpper();
+#else
+    return locale.exponential().toUpper();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleExpLower(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.exponential();
+    if (sign.size() == 1)
+    {
+        return sign.front().toLower();
+    }
+
+    return QLocale::c().exponential().front().toLower();
+#else
+    return locale.exponential().toLower();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleDecimalPoint(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.decimalPoint();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().decimalPoint().front();
+#else
+    return locale.decimalPoint();
+#endif
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+QChar VPELocaleGroupSeparator(const QLocale &locale)
+{
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    const QString sign = locale.groupSeparator();
+    if (sign.size() == 1)
+    {
+        return sign.front();
+    }
+
+    return QLocale::c().groupSeparator().front();
+#else
+    return locale.groupSeparator();
+#endif
+}
diff --git a/src/libs/vpropertyexplorer/vpropertydef.h b/src/libs/vpropertyexplorer/vpropertydef.h
index e27a91351..8715a84e2 100644
--- a/src/libs/vpropertyexplorer/vpropertydef.h
+++ b/src/libs/vpropertyexplorer/vpropertydef.h
@@ -28,6 +28,8 @@
 #ifndef VPROPERTYDEF_H
 #define VPROPERTYDEF_H
 
+#include "vpropertyexplorer_global.h"
+
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
 #include <QtGlobal>
 using vpesizetype = qsizetype;
@@ -35,4 +37,21 @@ using vpesizetype = qsizetype;
 using vpesizetype = int;
 #endif
 
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocalePositiveSign(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleNegativeSign(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign0(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign1(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign2(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign3(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign4(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign5(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign6(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign7(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign8(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleSign9(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleExpUpper(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleExpLower(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleDecimalPoint(const QLocale &locale) -> QChar;
+VPROPERTYEXPLORERSHARED_EXPORT auto VPELocaleGroupSeparator(const QLocale &locale) -> QChar;
+
 #endif // VPROPERTYDEF_H
diff --git a/src/libs/vpropertyexplorer/vpropertyexplorer.pri b/src/libs/vpropertyexplorer/vpropertyexplorer.pri
index f71b6547c..840148ec2 100644
--- a/src/libs/vpropertyexplorer/vpropertyexplorer.pri
+++ b/src/libs/vpropertyexplorer/vpropertyexplorer.pri
@@ -4,6 +4,7 @@
 SOURCES += \
     $$PWD/plugins/vtextproperty.cpp \
     $$PWD/vproperty.cpp \
+    $$PWD/vpropertydef.cpp \
     $$PWD/vpropertydelegate.cpp \
     $$PWD/vpropertyfactorymanager.cpp \
     $$PWD/vpropertyformview.cpp \
@@ -56,6 +57,7 @@ HEADERS +=\
     $$PWD/vpropertyset.h \
     $$PWD/vpropertymodel.h \
     $$PWD/vproperty.h \
+    $$PWD/vpropertydef.h \
     $$PWD/plugins/vwidgetproperty.h \
     $$PWD/plugins/vcolorproperty.h \
     $$PWD/plugins/vboolproperty.h \
diff --git a/src/libs/vpropertyexplorer/vpropertyexplorer.qbs b/src/libs/vpropertyexplorer/vpropertyexplorer.qbs
index f6b569156..0cd43859d 100644
--- a/src/libs/vpropertyexplorer/vpropertyexplorer.qbs
+++ b/src/libs/vpropertyexplorer/vpropertyexplorer.qbs
@@ -7,6 +7,7 @@ VDynamicLib {
     version: "1.0.0"
     files: [
         "vproperty.cpp",
+        "vpropertydef.cpp",
         "vpropertydef.h",
         "vpropertydelegate.cpp",
         "vpropertyfactorymanager.cpp",
diff --git a/src/libs/vtools/dialogs/dialogtoolbox.cpp b/src/libs/vtools/dialogs/dialogtoolbox.cpp
index 3e416cebc..d3f7c525b 100644
--- a/src/libs/vtools/dialogs/dialogtoolbox.cpp
+++ b/src/libs/vtools/dialogs/dialogtoolbox.cpp
@@ -250,11 +250,11 @@ bool FilterObject(QObject *object, QEvent *event)
             {
                 if (VAbstractApplication::VApp()->Settings()->GetOsSeparator())
                 {
-                    plainTextEdit->insertPlainText(QLocale().decimalPoint());
+                    plainTextEdit->insertPlainText(LocaleDecimalPoint(QLocale()));
                 }
                 else
                 {
-                    plainTextEdit->insertPlainText(QLocale::c().decimalPoint());
+                    plainTextEdit->insertPlainText(LocaleDecimalPoint(QLocale::c()));
                 }
                 return true;
             }
diff --git a/src/test/ValentinaTest/tst_nameregexp.cpp b/src/test/ValentinaTest/tst_nameregexp.cpp
index dfbce14af..d5416f901 100644
--- a/src/test/ValentinaTest/tst_nameregexp.cpp
+++ b/src/test/ValentinaTest/tst_nameregexp.cpp
@@ -48,7 +48,7 @@ void TST_NameRegExp::TestNameRegExp_data()
     const QList<QLocale> allLocales =
             QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript, QLocale::AnyCountry);
 
-    for(auto &locale : allLocales)
+    for(const auto &locale : allLocales)
     {
         INIT_LOCALE_VARIABLES(locale);
         Q_UNUSED(positiveSign)
@@ -56,6 +56,7 @@ void TST_NameRegExp::TestNameRegExp_data()
         Q_UNUSED(expLower)
 
         const QString localeName = locale.name();
+
         QString tag = localeName+QLatin1String(". First character can't be ")+sign0;
         QTest::newRow(qUtf8Printable(tag)) << sign0+QLatin1String("a") << false;
 
diff --git a/src/test/ValentinaTest/tst_qmutokenparser.cpp b/src/test/ValentinaTest/tst_qmutokenparser.cpp
index bc759dcb1..13fd1eb0d 100644
--- a/src/test/ValentinaTest/tst_qmutokenparser.cpp
+++ b/src/test/ValentinaTest/tst_qmutokenparser.cpp
@@ -28,6 +28,7 @@
 
 #include "tst_qmutokenparser.h"
 #include "../qmuparser/qmutokenparser.h"
+#include "../qmuparser/qmudef.h"
 
 #include <QtTest>
 
@@ -83,8 +84,12 @@ void TST_QmuTokenParser::TokenFromUser_data()
 
     const QList<QLocale> allLocales =
             QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript, QLocale::AnyCountry);
-    for(auto &locale : allLocales)
+    for(const auto &locale : allLocales)
     {
+        if (not SupportedLocale(locale))
+        {
+            continue;
+        }
         PrepareVal(1000.5, locale);
         PrepareVal(-1000.5, locale);
     }
@@ -153,14 +158,7 @@ bool TST_QmuTokenParser::IsSingleFromUser(const QString &formula)
     }
 
     // Remove "-" from tokens list if exist. If don't do that unary minus operation will broken.
-    qmu::QmuFormulaBase::RemoveAll(tokens, QLocale().negativeSign());
+    qmu::QmuFormulaBase::RemoveAll(tokens, LocaleNegativeSign(QLocale()));
 
-    if (tokens.isEmpty() && numbers.size() == 1)
-    {
-        return true;
-    }
-    else
-    {
-        return false;
-    }
+    return tokens.isEmpty() && numbers.size() == 1;
 }
diff --git a/src/test/ValentinaTest/tst_readval.cpp b/src/test/ValentinaTest/tst_readval.cpp
index 507dfa99e..3a95be604 100644
--- a/src/test/ValentinaTest/tst_readval.cpp
+++ b/src/test/ValentinaTest/tst_readval.cpp
@@ -28,6 +28,7 @@
 
 #include "tst_readval.h"
 #include "../qmuparser/qmudef.h"
+#include "../vmisc/compatibility.h"
 
 #include <QtTest>
 #include <limits>
@@ -49,8 +50,13 @@ void TST_ReadVal::TestReadVal_data()
 
     const QList<QLocale> allLocales =
             QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript, QLocale::AnyCountry);
-    for(auto &locale : allLocales)
+    for(const auto &locale : allLocales)
     {
+        if (not SupportedLocale(locale))
+        {
+            continue;
+        }
+
         PrepareVal(1., locale);
         PrepareVal(1.0, locale);
         PrepareVal(-1.0, locale);
@@ -138,7 +144,8 @@ void TST_ReadVal::TestVal()
     qreal resVal = 0;
     QLocale::setDefault(locale);
 
-    const vsizetype resCount = ReadVal(formula, resVal, locale, locale.decimalPoint(), locale.groupSeparator());
+    const vsizetype resCount = ReadVal(formula, resVal, locale, VLocaleCharacter(LocaleDecimalPoint(locale)),
+                                       VLocaleCharacter(LocaleGroupSeparator(locale)));
 
     // cppcheck-suppress unreadVariable
     QString errorMsg = QStringLiteral("Conversion failed. Locale: '%1'.").arg(locale.name());
diff --git a/src/test/ValentinaTest/tst_vtranslatevars.cpp b/src/test/ValentinaTest/tst_vtranslatevars.cpp
index 31062c8f9..3059c9623 100644
--- a/src/test/ValentinaTest/tst_vtranslatevars.cpp
+++ b/src/test/ValentinaTest/tst_vtranslatevars.cpp
@@ -28,8 +28,9 @@
 
 #include "tst_vtranslatevars.h"
 #include "../vpatterndb/vtranslatevars.h"
-#include "../qmuparser/qmuparsererror.h"
+#include "../qmuparser/qmudef.h"
 #include "testvapplication.h"
+#include "../vmisc/compatibility.h"
 
 #include <QtTest>
 
@@ -59,6 +60,11 @@ void TST_VTranslateVars::TestFormulaFromUser_data()
             QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript, QLocale::AnyCountry);
     for(auto &locale : allLocales)
     {
+        if (not SupportedLocale(locale))
+        {
+            continue;
+        }
+
         PrepareValFromUser(1000.5, locale);
         PrepareValFromUser(-1000.5, locale);
     }
@@ -89,6 +95,11 @@ void TST_VTranslateVars::TestFormulaToUser_data()
             QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript, QLocale::AnyCountry);
     for(auto &locale : allLocales)
     {
+        if (not SupportedLocale(locale))
+        {
+            continue;
+        }
+
         PrepareValToUser(1000.5, locale);
         PrepareValToUser(-1000.5, locale);
     }
@@ -129,9 +140,9 @@ void TST_VTranslateVars::PrepareValToUser(double d, const QLocale &locale)
 {
     const QString formulaFromSystem = QLocale::c().toString(d);
     QString formulaToUser = locale.toString(d);
-    if (locale.groupSeparator().isSpace())
+    if (VLocaleCharacter(LocaleGroupSeparator(locale)).isSpace())
     {
-        formulaToUser.replace(locale.groupSeparator(), QString());
+        formulaToUser.replace(LocaleGroupSeparator(locale), QString());
     }
 
     PrepareVal(formulaFromSystem, formulaToUser, locale);