diff --git a/src/libs/vtools/dialogs/tools/dialogarc.cpp b/src/libs/vtools/dialogs/tools/dialogarc.cpp
index 363c47d92..a3f263ee9 100644
--- a/src/libs/vtools/dialogs/tools/dialogarc.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogarc.cpp
@@ -48,6 +48,7 @@
 #include "../vmisc/vcommonsettings.h"
 #include "ui_dialogarc.h"
 #include "../vgeometry/varc.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -356,9 +357,11 @@ void DialogArc::closeEvent(QCloseEvent *event)
 //---------------------------------------------------------------------------------------------------------------------
 void DialogArc::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VArc arc;
     arc.SetAliasSuffix(GetAliasSuffix());
-    if (not GetAliasSuffix().isEmpty() && not data->IsUnique(arc.GetAlias()))
+    if (not GetAliasSuffix().isEmpty() &&
+        (not rx.match(arc.GetAlias()).hasMatch() || not data->IsUnique(arc.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp b/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp
index 2709d6304..53889f68b 100644
--- a/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp
@@ -48,6 +48,7 @@
 #include "../../visualization/visualization.h"
 #include "ui_dialogarcwithlength.h"
 #include "../vgeometry/varc.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 DialogArcWithLength::DialogArcWithLength(const VContainer *data, quint32 toolId, QWidget *parent)
@@ -393,9 +394,11 @@ void DialogArcWithLength::closeEvent(QCloseEvent *event)
 //---------------------------------------------------------------------------------------------------------------------
 void DialogArcWithLength::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VArc arc;
     arc.SetAliasSuffix(GetAliasSuffix());
-    if (not GetAliasSuffix().isEmpty() && not data->IsUnique(arc.GetAlias()))
+    if (not GetAliasSuffix().isEmpty() &&
+        (not rx.match(arc.GetAlias()).hasMatch() || not data->IsUnique(arc.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogcubicbezier.cpp b/src/libs/vtools/dialogs/tools/dialogcubicbezier.cpp
index a1ae6a29d..0abe851dc 100644
--- a/src/libs/vtools/dialogs/tools/dialogcubicbezier.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcubicbezier.cpp
@@ -42,6 +42,7 @@
 #include "../vpatterndb/vcontainer.h"
 #include "dialogtool.h"
 #include "ui_dialogcubicbezier.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 DialogCubicBezier::DialogCubicBezier(const VContainer *data, quint32 toolId, QWidget *parent)
@@ -265,9 +266,11 @@ void DialogCubicBezier::SaveData()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCubicBezier::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VCubicBezier spline = spl;
     spline.SetAliasSuffix(ui->lineEditAlias->text());
-    if (not ui->lineEditAlias->text().isEmpty() && not data->IsUnique(spline.GetAlias()))
+    if (not ui->lineEditAlias->text().isEmpty() &&
+        (not rx.match(spline.GetAlias()).hasMatch() || not data->IsUnique(spline.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogcubicbezierpath.cpp b/src/libs/vtools/dialogs/tools/dialogcubicbezierpath.cpp
index 92831ef3b..6b10de924 100644
--- a/src/libs/vtools/dialogs/tools/dialogcubicbezierpath.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcubicbezierpath.cpp
@@ -54,6 +54,7 @@
 #include "../vwidgets/vabstractmainwindow.h"
 #include "dialogtool.h"
 #include "ui_dialogcubicbezierpath.h"
+#include "../qmuparser/qmudef.h"
 
 class QWidget;
 
@@ -254,9 +255,11 @@ void DialogCubicBezierPath::currentPointChanged(int index)
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCubicBezierPath::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VCubicBezierPath tempPath = path;
     tempPath.SetAliasSuffix(ui->lineEditAlias->text());
-    if (not ui->lineEditAlias->text().isEmpty() && not data->IsUnique(tempPath.GetAlias()))
+    if (not ui->lineEditAlias->text().isEmpty() &&
+        (not rx.match(tempPath.GetAlias()).hasMatch() || not data->IsUnique(tempPath.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogcutarc.cpp b/src/libs/vtools/dialogs/tools/dialogcutarc.cpp
index 24a24e356..41aa68a61 100644
--- a/src/libs/vtools/dialogs/tools/dialogcutarc.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcutarc.cpp
@@ -47,6 +47,7 @@
 #include "../vmisc/vcommonsettings.h"
 #include "ui_dialogcutarc.h"
 #include "../vgeometry/varc.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -207,9 +208,11 @@ void DialogCutArc::ArcChanged()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCutArc::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VArc arc1;
     arc1.SetAliasSuffix(GetAliasSuffix1());
-    if (not GetAliasSuffix1().isEmpty() && not data->IsUnique(arc1.GetAlias()))
+    if (not GetAliasSuffix1().isEmpty() &&
+        (not rx.match(arc1.GetAlias()).hasMatch() || not data->IsUnique(arc1.GetAlias())))
     {
         flagAlias1 = false;
         ChangeColor(ui->labelAlias1, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogcutspline.cpp b/src/libs/vtools/dialogs/tools/dialogcutspline.cpp
index 8d1d860c0..854caaf70 100644
--- a/src/libs/vtools/dialogs/tools/dialogcutspline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcutspline.cpp
@@ -47,6 +47,7 @@
 #include "../vmisc/vcommonsettings.h"
 #include "ui_dialogcutspline.h"
 #include "../vgeometry/vspline.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -214,9 +215,11 @@ void DialogCutSpline::SplineChanged()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCutSpline::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VSpline spl1;
     spl1.SetAliasSuffix(GetAliasSuffix1());
-    if (not GetAliasSuffix1().isEmpty() && not data->IsUnique(spl1.GetAlias()))
+    if (not GetAliasSuffix1().isEmpty() &&
+        (not rx.match(spl1.GetAlias()).hasMatch() || not data->IsUnique(spl1.GetAlias())))
     {
         flagAlias1 = false;
         ChangeColor(ui->labelAlias1, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp b/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
index dac741413..412caa5c7 100644
--- a/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
@@ -47,6 +47,7 @@
 #include "../vmisc/vcommonsettings.h"
 #include "ui_dialogcutsplinepath.h"
 #include "../vgeometry/vsplinepath.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -214,9 +215,11 @@ void DialogCutSplinePath::SplinePathChanged()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogCutSplinePath::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VSplinePath path1;
     path1.SetAliasSuffix(GetAliasSuffix1());
-    if (not GetAliasSuffix1().isEmpty() && not data->IsUnique(path1.GetAlias()))
+    if (not GetAliasSuffix1().isEmpty() &&
+        (not rx.match(path1.GetAlias()).hasMatch() || not data->IsUnique(path1.GetAlias())))
     {
         flagAlias1 = false;
         ChangeColor(ui->labelAlias1, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp b/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp
index 1d5766d95..058913369 100644
--- a/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp
@@ -48,6 +48,7 @@
 #include "../vmisc/vcommonsettings.h"
 #include "ui_dialogellipticalarc.h"
 #include "../vgeometry/vellipticalarc.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -598,9 +599,11 @@ void DialogEllipticalArc::closeEvent(QCloseEvent *event)
 //---------------------------------------------------------------------------------------------------------------------
 void DialogEllipticalArc::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VEllipticalArc arc;
     arc.SetAliasSuffix(GetAliasSuffix());
-    if (not GetAliasSuffix().isEmpty() && not data->IsUnique(arc.GetAlias()))
+    if (not GetAliasSuffix().isEmpty() &&
+        (not rx.match(arc.GetAlias()).hasMatch() || not data->IsUnique(arc.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogspline.cpp b/src/libs/vtools/dialogs/tools/dialogspline.cpp
index 94cde26a4..9c8404846 100644
--- a/src/libs/vtools/dialogs/tools/dialogspline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogspline.cpp
@@ -56,6 +56,7 @@
 #include "../vwidgets/vmaingraphicsscene.h"
 #include "ui_dialogspline.h"
 #include "vtranslatevars.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -437,9 +438,11 @@ void DialogSpline::EvalLength2()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogSpline::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VSpline spline = spl;
     spline.SetAliasSuffix(ui->lineEditAlias->text());
-    if (not ui->lineEditAlias->text().isEmpty() && not data->IsUnique(spline.GetAlias()))
+    if (not ui->lineEditAlias->text().isEmpty() &&
+        (not rx.match(spline.GetAlias()).hasMatch() || not data->IsUnique(spline.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);
diff --git a/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp b/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp
index d628aaca6..b8637dddc 100644
--- a/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp
@@ -63,6 +63,7 @@
 #include "../vwidgets/vmaingraphicsscene.h"
 #include "ui_dialogsplinepath.h"
 #include "vtranslatevars.h"
+#include "../qmuparser/qmudef.h"
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -498,9 +499,11 @@ void DialogSplinePath::FXLength2()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogSplinePath::ValidateAlias()
 {
+    QRegularExpression rx(NameRegExp());
     VSplinePath tempPath = path;
     tempPath.SetAliasSuffix(ui->lineEditAlias->text());
-    if (not ui->lineEditAlias->text().isEmpty() && not data->IsUnique(tempPath.GetAlias()))
+    if (not ui->lineEditAlias->text().isEmpty() &&
+        (not rx.match(tempPath.GetAlias()).hasMatch() || not data->IsUnique(tempPath.GetAlias())))
     {
         flagAlias = false;
         ChangeColor(ui->labelAlias, errorColor);