diff --git a/src/app/tape/dialogs/dialogmdatabase.cpp b/src/app/tape/dialogs/dialogmdatabase.cpp
index e3ce2ccf8..097039bdb 100644
--- a/src/app/tape/dialogs/dialogmdatabase.cpp
+++ b/src/app/tape/dialogs/dialogmdatabase.cpp
@@ -453,6 +453,8 @@ QTreeWidgetItem *DialogMDataBase::AddGroup(const QString &text)
 //---------------------------------------------------------------------------------------------------------------------
 void DialogMDataBase::AddMeasurement(QTreeWidgetItem *group, const QString &name, const QStringList &list)
 {
+    SCASSERT(group != nullptr)
+
     QTreeWidgetItem *m = new QTreeWidgetItem(group);
 
     if (selectMode)
diff --git a/src/app/tape/dialogs/tapeconfigdialog.cpp b/src/app/tape/dialogs/tapeconfigdialog.cpp
index 6bf75ea3e..d7e5c9039 100644
--- a/src/app/tape/dialogs/tapeconfigdialog.cpp
+++ b/src/app/tape/dialogs/tapeconfigdialog.cpp
@@ -180,6 +180,8 @@ void TapeConfigDialog::createIcons()
 //---------------------------------------------------------------------------------------------------------------------
 void TapeConfigDialog::createIcon(const QString &icon, const QString &text)
 {
+    SCASSERT(contentsWidget != nullptr)
+
     QListWidgetItem *button = new QListWidgetItem(contentsWidget);
     button->setIcon(QIcon(icon));
     button->setText(text);
diff --git a/src/app/valentina/dialogs/configdialog.cpp b/src/app/valentina/dialogs/configdialog.cpp
index 75dc30e15..5cccea4fa 100644
--- a/src/app/valentina/dialogs/configdialog.cpp
+++ b/src/app/valentina/dialogs/configdialog.cpp
@@ -181,6 +181,8 @@ void ConfigDialog::createIcons()
 //---------------------------------------------------------------------------------------------------------------------
 void ConfigDialog::createIcon(const QString &icon, const QString &text)
 {
+    SCASSERT(contentsWidget != nullptr)
+
     QListWidgetItem *button = new QListWidgetItem(contentsWidget);
     button->setIcon(QIcon(icon));
     button->setText(text);