diff --git a/src/libs/3rdparty/modeling/qmt/config/stringtextsource.h b/src/libs/3rdparty/modeling/qmt/config/stringtextsource.h
index fb4f8f50413..83b49c4baf2 100644
--- a/src/libs/3rdparty/modeling/qmt/config/stringtextsource.h
+++ b/src/libs/3rdparty/modeling/qmt/config/stringtextsource.h
@@ -41,7 +41,7 @@ class QMT_EXPORT StringTextSource : public ITextSource
 {
 public:
     StringTextSource();
-    ~StringTextSource() override;
+    ~StringTextSource();
 
     void setText(const QString &text);
     int sourceId() const { return m_sourceId; }
diff --git a/src/libs/3rdparty/modeling/qmt/config/textsource.h b/src/libs/3rdparty/modeling/qmt/config/textsource.h
index 71265139434..d8dee465b74 100644
--- a/src/libs/3rdparty/modeling/qmt/config/textsource.h
+++ b/src/libs/3rdparty/modeling/qmt/config/textsource.h
@@ -54,7 +54,7 @@ public:
 class ITextSource
 {
 public:
-    virtual ~ITextSource() = default;
+    virtual ~ITextSource() {}
 
     virtual SourceChar readNextChar() = 0;
 };
diff --git a/src/libs/3rdparty/modeling/qmt/diagram/dconstvisitor.h b/src/libs/3rdparty/modeling/qmt/diagram/dconstvisitor.h
index 85630099441..caca63c54f7 100644
--- a/src/libs/3rdparty/modeling/qmt/diagram/dconstvisitor.h
+++ b/src/libs/3rdparty/modeling/qmt/diagram/dconstvisitor.h
@@ -50,7 +50,7 @@ class DBoundary;
 class DConstVisitor
 {
 public:
-    virtual ~DConstVisitor() = default;
+    virtual ~DConstVisitor() {}
 
     virtual void visitDElement(const DElement *element) = 0;
     virtual void visitDObject(const DObject *object) = 0;
diff --git a/src/libs/3rdparty/modeling/qmt/diagram/dvisitor.h b/src/libs/3rdparty/modeling/qmt/diagram/dvisitor.h
index e397d21a5f6..b4c2c5147b8 100644
--- a/src/libs/3rdparty/modeling/qmt/diagram/dvisitor.h
+++ b/src/libs/3rdparty/modeling/qmt/diagram/dvisitor.h
@@ -50,7 +50,7 @@ class DBoundary;
 class DVisitor
 {
 public:
-    virtual ~DVisitor() = default;
+    virtual ~DVisitor() {}
 
     virtual void visitDElement(DElement *element) = 0;
     virtual void visitDObject(DObject *object) = 0;
diff --git a/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/alignable.h b/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/alignable.h
index 87c588ae11d..a0b2fef19f9 100644
--- a/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/alignable.h
+++ b/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/alignable.h
@@ -50,7 +50,7 @@ public:
         AlignSize
     };
 
-    virtual ~IAlignable() = default;
+    virtual ~IAlignable();
 
     virtual void align(AlignType alignType, const QString &identifier) = 0;
 };
diff --git a/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/latchable.h b/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/latchable.h
index b6f78954872..52097e24084 100644
--- a/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/latchable.h
+++ b/src/libs/3rdparty/modeling/qmt/diagram_scene/capabilities/latchable.h
@@ -78,7 +78,7 @@ public:
         QString m_identifier;
     };
 
-    virtual ~ILatchable() = default;
+    virtual ~ILatchable();
 
     virtual QList<Latch> horizontalLatches(Action action, bool grabbedItem) const = 0;
     virtual QList<Latch> verticalLatches(Action action, bool grabbedItem) const = 0;
diff --git a/src/libs/3rdparty/modeling/qmt/diagram_scene/items/stereotypedisplayvisitor.h b/src/libs/3rdparty/modeling/qmt/diagram_scene/items/stereotypedisplayvisitor.h
index f995713b5e2..6a21ca0e1c6 100644
--- a/src/libs/3rdparty/modeling/qmt/diagram_scene/items/stereotypedisplayvisitor.h
+++ b/src/libs/3rdparty/modeling/qmt/diagram_scene/items/stereotypedisplayvisitor.h
@@ -45,7 +45,7 @@ class StereotypeDisplayVisitor : public DConstVoidVisitor
 {
 public:
     StereotypeDisplayVisitor();
-    ~StereotypeDisplayVisitor() override;
+    ~StereotypeDisplayVisitor();
 
     void setModelController(ModelController *modelController);
     void setStereotypeController(StereotypeController *stereotypeController);
diff --git a/src/libs/3rdparty/modeling/qmt/model_widgets_ui/propertiesviewmview.h b/src/libs/3rdparty/modeling/qmt/model_widgets_ui/propertiesviewmview.h
index 12ec141e1fd..a16e15a2da9 100644
--- a/src/libs/3rdparty/modeling/qmt/model_widgets_ui/propertiesviewmview.h
+++ b/src/libs/3rdparty/modeling/qmt/model_widgets_ui/propertiesviewmview.h
@@ -67,7 +67,7 @@ class QMT_EXPORT PropertiesView::MView : public QObject, public MConstVisitor, p
 
 public:
     explicit MView(PropertiesView *propertiesView);
-    ~MView() override;
+    ~MView();
 
     QWidget *topLevelWidget() const { return m_topWidget; }
 
diff --git a/src/libs/3rdparty/modeling/qmt/tasks/alignonrastervisitor.h b/src/libs/3rdparty/modeling/qmt/tasks/alignonrastervisitor.h
index f53f31d2faf..eb47c5d0f3b 100644
--- a/src/libs/3rdparty/modeling/qmt/tasks/alignonrastervisitor.h
+++ b/src/libs/3rdparty/modeling/qmt/tasks/alignonrastervisitor.h
@@ -44,7 +44,7 @@ class QMT_EXPORT AlignOnRasterVisitor : public DVisitor
 {
 public:
     AlignOnRasterVisitor();
-    ~AlignOnRasterVisitor() override;
+    ~AlignOnRasterVisitor();
 
     void setDiagramController(DiagramController *diagramController);
     void setSceneInspector(ISceneInspector *sceneInspector);