diff --git a/src/libs/qmuparser/qmuparsercallback_p.h b/src/libs/qmuparser/qmuparsercallback_p.h
index fa84e96ec..e84dc3612 100644
--- a/src/libs/qmuparser/qmuparsercallback_p.h
+++ b/src/libs/qmuparser/qmuparsercallback_p.h
@@ -28,6 +28,7 @@
 #include <QSharedData>
 #include "qmuparserdef.h"
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -88,7 +89,7 @@ public:
     bool  m_bAllowOpti;             ///< Flag indication optimizeability
 
 private:
-    QmuParserCallbackData &operator=(const QmuParserCallbackData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(QmuParserCallbackData)
 };
 
 }
diff --git a/src/libs/vgeometry/vabstractarc_p.h b/src/libs/vgeometry/vabstractarc_p.h
index f71a49c79..c96c52401 100644
--- a/src/libs/vgeometry/vabstractarc_p.h
+++ b/src/libs/vgeometry/vabstractarc_p.h
@@ -70,7 +70,7 @@ public:
     QString formulaLength;
 
 private:
-    VAbstractArcData &operator=(const VAbstractArcData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VAbstractArcData)
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vgeometry/vabstractcurve_p.h b/src/libs/vgeometry/vabstractcurve_p.h
index b4793cbd1..40e3f0f5f 100644
--- a/src/libs/vgeometry/vabstractcurve_p.h
+++ b/src/libs/vgeometry/vabstractcurve_p.h
@@ -68,7 +68,7 @@ public:
     qreal approximationScale;
 
 private:
-    VAbstractCurveData &operator=(const VAbstractCurveData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VAbstractCurveData)
 };
 
 VAbstractCurveData::~VAbstractCurveData()
diff --git a/src/libs/vgeometry/varc_p.h b/src/libs/vgeometry/varc_p.h
index 6d77b5176..7e33b2996 100644
--- a/src/libs/vgeometry/varc_p.h
+++ b/src/libs/vgeometry/varc_p.h
@@ -54,7 +54,7 @@ public:
     QString            formulaRadius;
 
 private:
-    VArcData &operator=(const VArcData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VArcData)
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vgeometry/vcubicbezier_p.h b/src/libs/vgeometry/vcubicbezier_p.h
index 66ac913cc..ee8213979 100644
--- a/src/libs/vgeometry/vcubicbezier_p.h
+++ b/src/libs/vgeometry/vcubicbezier_p.h
@@ -62,7 +62,7 @@ public:
     VPointF p4;
 
 private:
-    VCubicBezierData &operator=(const VCubicBezierData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VCubicBezierData)
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vgeometry/vcubicbezierpath_p.h b/src/libs/vgeometry/vcubicbezierpath_p.h
index 34890cfc4..afc694dbc 100644
--- a/src/libs/vgeometry/vcubicbezierpath_p.h
+++ b/src/libs/vgeometry/vcubicbezierpath_p.h
@@ -57,7 +57,7 @@ public:
     QVector<VPointF> path;
 
 private:
-    VCubicBezierPathData &operator=(const VCubicBezierPathData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VCubicBezierPathData)
 };
 
 VCubicBezierPathData::~VCubicBezierPathData()
diff --git a/src/libs/vgeometry/vellipticalarc_p.h b/src/libs/vgeometry/vellipticalarc_p.h
index f703bd645..869ba0945 100644
--- a/src/libs/vgeometry/vellipticalarc_p.h
+++ b/src/libs/vgeometry/vellipticalarc_p.h
@@ -36,7 +36,7 @@ public:
     QTransform m_transform;
 
 private:
-    VEllipticalArcData &operator=(const VEllipticalArcData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VEllipticalArcData)
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vgeometry/vgobject_p.h b/src/libs/vgeometry/vgobject_p.h
index 5c05027a4..8f5a57057 100644
--- a/src/libs/vgeometry/vgobject_p.h
+++ b/src/libs/vgeometry/vgobject_p.h
@@ -71,7 +71,7 @@ public:
     Draw    mode;
 
 private:
-    VGObjectData &operator=(const VGObjectData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VGObjectData)
 };
 
 VGObjectData::~VGObjectData()
diff --git a/src/libs/vgeometry/vplacelabelitem_p.h b/src/libs/vgeometry/vplacelabelitem_p.h
index 4e25784d3..009c9c191 100644
--- a/src/libs/vgeometry/vplacelabelitem_p.h
+++ b/src/libs/vgeometry/vplacelabelitem_p.h
@@ -74,7 +74,7 @@ public:
     qreal isVisible{1};
 
 private:
-    VPlaceLabelItemData &operator=(const VPlaceLabelItemData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPlaceLabelItemData)
 };
 
 VPlaceLabelItemData::~VPlaceLabelItemData()
diff --git a/src/libs/vgeometry/vpointf_p.h b/src/libs/vgeometry/vpointf_p.h
index b23c68aa3..0f5a89c2a 100644
--- a/src/libs/vgeometry/vpointf_p.h
+++ b/src/libs/vgeometry/vpointf_p.h
@@ -80,7 +80,7 @@ public:
     bool m_showLabel;
 
 private:
-    VPointFData &operator=(const VPointFData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPointFData)
 };
 
 VPointFData::~VPointFData()
diff --git a/src/libs/vgeometry/vspline_p.h b/src/libs/vgeometry/vspline_p.h
index d6a3e3da8..59da50f86 100644
--- a/src/libs/vgeometry/vspline_p.h
+++ b/src/libs/vgeometry/vspline_p.h
@@ -87,7 +87,7 @@ public:
     qreal   kCurve;
 
 private:
-    VSplineData &operator=(const VSplineData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VSplineData)
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vgeometry/vsplinepath_p.h b/src/libs/vgeometry/vsplinepath_p.h
index 978a163a4..3e6bbf299 100644
--- a/src/libs/vgeometry/vsplinepath_p.h
+++ b/src/libs/vgeometry/vsplinepath_p.h
@@ -57,7 +57,7 @@ public:
     QVector<VSplinePoint> path;
 
 private:
-    VSplinePathData &operator=(const VSplinePathData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VSplinePathData)
 };
 
 VSplinePathData::~VSplinePathData()
diff --git a/src/libs/vgeometry/vsplinepoint_p.h b/src/libs/vgeometry/vsplinepoint_p.h
index 1c978c857..704e29908 100644
--- a/src/libs/vgeometry/vsplinepoint_p.h
+++ b/src/libs/vgeometry/vsplinepoint_p.h
@@ -93,7 +93,7 @@ public:
     qreal   kAsm2;
 
 private:
-    VFSplinePointData &operator=(const VFSplinePointData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VFSplinePointData)
 };
 
 VFSplinePointData::~VFSplinePointData()
@@ -164,7 +164,7 @@ public:
     QString length2F;
 
 private:
-    VSplinePointData &operator=(const VSplinePointData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VSplinePointData)
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vlayout/vabstractpiece_p.h b/src/libs/vlayout/vabstractpiece_p.h
index f3a3b26cf..9cdb1a171 100644
--- a/src/libs/vlayout/vabstractpiece_p.h
+++ b/src/libs/vlayout/vabstractpiece_p.h
@@ -34,6 +34,7 @@
 #include <QCoreApplication>
 
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -82,7 +83,7 @@ public:
     qreal   m_my;
 
 private:
-    VAbstractPieceData &operator=(const VAbstractPieceData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VAbstractPieceData)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vlayout/vbestsquare_p.h b/src/libs/vlayout/vbestsquare_p.h
index 5ce4e02b7..3a7a4cf44 100644
--- a/src/libs/vlayout/vbestsquare_p.h
+++ b/src/libs/vlayout/vbestsquare_p.h
@@ -33,6 +33,7 @@
 
 #include "vlayoutdef.h"
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -71,7 +72,7 @@ public:
     QString exceptionReason{};
 
 private:
-    VBestSquareData &operator=(const VBestSquareData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VBestSquareData)
 };
 
 #endif // VBESTSQUARE_P_H
diff --git a/src/libs/vlayout/vcontour_p.h b/src/libs/vlayout/vcontour_p.h
index dde07b293..e1894f204 100644
--- a/src/libs/vlayout/vcontour_p.h
+++ b/src/libs/vlayout/vcontour_p.h
@@ -36,6 +36,7 @@
 #include <QPainterPath>
 
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -81,7 +82,7 @@ public:
     int  m_emptySheetEdgesCount{0};
 
 private:
-    VContourData &operator=(const VContourData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VContourData)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vlayout/vlayoutpaper_p.h b/src/libs/vlayout/vlayoutpaper_p.h
index d4826b0da..2d51de511 100644
--- a/src/libs/vlayout/vlayoutpaper_p.h
+++ b/src/libs/vlayout/vlayoutpaper_p.h
@@ -88,7 +88,7 @@ public:
     bool originPaperOrientation{true};
 
 private:
-    VLayoutPaperData& operator=(const VLayoutPaperData&) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VLayoutPaperData)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vlayout/vlayoutpiece_p.h b/src/libs/vlayout/vlayoutpiece_p.h
index 28a668d7b..4ef3e33a0 100644
--- a/src/libs/vlayout/vlayoutpiece_p.h
+++ b/src/libs/vlayout/vlayoutpiece_p.h
@@ -146,7 +146,7 @@ public:
     qint64 m_square{0};
 
 private:
-    VLayoutPieceData &operator=(const VLayoutPieceData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VLayoutPieceData)
 
     static const quint32 streamHeader;
     static const quint16 classVersion;
diff --git a/src/libs/vlayout/vlayoutpiecepath_p.h b/src/libs/vlayout/vlayoutpiecepath_p.h
index 39eabfcf0..b5438889a 100644
--- a/src/libs/vlayout/vlayoutpiecepath_p.h
+++ b/src/libs/vlayout/vlayoutpiecepath_p.h
@@ -72,7 +72,7 @@ public:
     bool             m_cut{false};
 
 private:
-    VLayoutPiecePathData &operator=(const VLayoutPiecePathData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VLayoutPiecePathData)
 
     static const quint32 streamHeader;
     static const quint16 classVersion;
diff --git a/src/libs/vmisc/defglobal.h b/src/libs/vmisc/defglobal.h
index 940a48192..ea085308c 100644
--- a/src/libs/vmisc/defglobal.h
+++ b/src/libs/vmisc/defglobal.h
@@ -43,4 +43,9 @@ template <typename T>
 void qAsConst(const T &&) Q_DECL_EQ_DELETE;
 #endif
 
+#ifndef Q_DISABLE_ASSIGN
+#define Q_DISABLE_ASSIGN(Class) \
+    Class &operator=(const Class &) Q_DECL_EQ_DELETE;
+#endif
+
 #endif // DEFGLOBAL_H
diff --git a/src/libs/vpatterndb/floatItemData/vabstractfloatitemdata_p.h b/src/libs/vpatterndb/floatItemData/vabstractfloatitemdata_p.h
index 1b897bc9f..249bf502f 100644
--- a/src/libs/vpatterndb/floatItemData/vabstractfloatitemdata_p.h
+++ b/src/libs/vpatterndb/floatItemData/vabstractfloatitemdata_p.h
@@ -33,6 +33,7 @@
 #include <QSharedData>
 
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -60,7 +61,7 @@ public:
     bool    m_bVisible;
 
 private:
-    VAbstractFloatItemDataPrivate &operator=(const VAbstractFloatItemDataPrivate &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VAbstractFloatItemDataPrivate)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/floatItemData/vgrainlinedata_p.h b/src/libs/vpatterndb/floatItemData/vgrainlinedata_p.h
index 66be05ea9..0b7e500e5 100644
--- a/src/libs/vpatterndb/floatItemData/vgrainlinedata_p.h
+++ b/src/libs/vpatterndb/floatItemData/vgrainlinedata_p.h
@@ -78,7 +78,7 @@ public:
     quint32   m_bottomPin;
 
 private:
-    VGrainlineDataPrivate &operator=(const VGrainlineDataPrivate &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VGrainlineDataPrivate)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/floatItemData/vpatternlabeldata_p.h b/src/libs/vpatterndb/floatItemData/vpatternlabeldata_p.h
index cd59cd430..4d564eb9b 100644
--- a/src/libs/vpatterndb/floatItemData/vpatternlabeldata_p.h
+++ b/src/libs/vpatterndb/floatItemData/vpatternlabeldata_p.h
@@ -81,7 +81,7 @@ public:
     quint32 m_bottomRightPin;
 
 private:
-    VPatternLabelDataPrivate &operator=(const VPatternLabelDataPrivate &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPatternLabelDataPrivate)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/floatItemData/vpiecelabeldata_p.h b/src/libs/vpatterndb/floatItemData/vpiecelabeldata_p.h
index 199108cb2..5396d1dd3 100644
--- a/src/libs/vpatterndb/floatItemData/vpiecelabeldata_p.h
+++ b/src/libs/vpatterndb/floatItemData/vpiecelabeldata_p.h
@@ -85,7 +85,7 @@ public:
     QVector<VLabelTemplateLine> m_lines;
 
 private:
-    VPieceLabelDataPrivate &operator=(const VPieceLabelDataPrivate &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPieceLabelDataPrivate)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/variables/varcradius_p.h b/src/libs/vpatterndb/variables/varcradius_p.h
index 53a22d796..39ca1eccb 100644
--- a/src/libs/vpatterndb/variables/varcradius_p.h
+++ b/src/libs/vpatterndb/variables/varcradius_p.h
@@ -32,6 +32,7 @@
 #include <QSharedData>
 
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -53,12 +54,12 @@ public:
         :QSharedData(var), arcId(var.arcId)
     {}
 
-    virtual  ~VArcRadiusData() override;
+    virtual  ~VArcRadiusData();
 
     quint32 arcId;
 
 private:
-    VArcRadiusData &operator=(const VArcRadiusData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VArcRadiusData)
 };
 
 VArcRadiusData::~VArcRadiusData()
diff --git a/src/libs/vpatterndb/variables/vcurvevariable_p.h b/src/libs/vpatterndb/variables/vcurvevariable_p.h
index 06a4a3f51..842e804da 100644
--- a/src/libs/vpatterndb/variables/vcurvevariable_p.h
+++ b/src/libs/vpatterndb/variables/vcurvevariable_p.h
@@ -60,7 +60,7 @@ public:
     quint32 parentId;
 
 private:
-    VCurveVariableData &operator=(const VCurveVariableData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VCurveVariableData)
 };
 
 VCurveVariableData::~VCurveVariableData()
diff --git a/src/libs/vpatterndb/variables/vincrement_p.h b/src/libs/vpatterndb/variables/vincrement_p.h
index 9617fbb9c..25de6bb5b 100644
--- a/src/libs/vpatterndb/variables/vincrement_p.h
+++ b/src/libs/vpatterndb/variables/vincrement_p.h
@@ -84,7 +84,7 @@ public:
     IncrementType incrType{IncrementType::Increment};
 
 private:
-    VIncrementData &operator=(const VIncrementData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VIncrementData)
 };
 
 VIncrementData::~VIncrementData()
diff --git a/src/libs/vpatterndb/variables/vinternalvariable_p.h b/src/libs/vpatterndb/variables/vinternalvariable_p.h
index 36d654177..7a192534c 100644
--- a/src/libs/vpatterndb/variables/vinternalvariable_p.h
+++ b/src/libs/vpatterndb/variables/vinternalvariable_p.h
@@ -59,7 +59,7 @@ public:
     QString name;
 
 private:
-    VInternalVariableData &operator=(const VInternalVariableData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VInternalVariableData)
 };
 
 VInternalVariableData::~VInternalVariableData()
diff --git a/src/libs/vpatterndb/variables/vlineangle_p.h b/src/libs/vpatterndb/variables/vlineangle_p.h
index 8b4b2484e..27393977c 100644
--- a/src/libs/vpatterndb/variables/vlineangle_p.h
+++ b/src/libs/vpatterndb/variables/vlineangle_p.h
@@ -60,7 +60,7 @@ public:
     quint32 p2Id;
 
 private:
-    VLineAngleData &operator=(const VLineAngleData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VLineAngleData)
 };
 
 VLineAngleData::~VLineAngleData()
diff --git a/src/libs/vpatterndb/variables/vlinelength_p.h b/src/libs/vpatterndb/variables/vlinelength_p.h
index b246299e7..9f47c1ea5 100644
--- a/src/libs/vpatterndb/variables/vlinelength_p.h
+++ b/src/libs/vpatterndb/variables/vlinelength_p.h
@@ -61,7 +61,7 @@ public:
     Unit    patternUnit;
 
 private:
-    VLengthLineData &operator=(const VLengthLineData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VLengthLineData)
 };
 
 VLengthLineData::~VLengthLineData()
diff --git a/src/libs/vpatterndb/variables/vmeasurement_p.h b/src/libs/vpatterndb/variables/vmeasurement_p.h
index 0ea69b667..999b39809 100644
--- a/src/libs/vpatterndb/variables/vmeasurement_p.h
+++ b/src/libs/vpatterndb/variables/vmeasurement_p.h
@@ -122,7 +122,7 @@ public:
     qreal baseHeight;
 
 private:
-    VMeasurementData &operator=(const VMeasurementData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VMeasurementData)
 };
 
 VMeasurementData::~VMeasurementData()
diff --git a/src/libs/vpatterndb/variables/vvariable_p.h b/src/libs/vpatterndb/variables/vvariable_p.h
index 6922fcd26..8497c552c 100644
--- a/src/libs/vpatterndb/variables/vvariable_p.h
+++ b/src/libs/vpatterndb/variables/vvariable_p.h
@@ -32,6 +32,7 @@
 #include <QSharedData>
 
 #include "../vmisc/diagnostic.h"
+#include "../vmisc/defglobal.h"
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_GCC("-Weffc++")
@@ -60,7 +61,7 @@ public:
     QString description;
 
 private:
-    VVariableData &operator=(const VVariableData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VVariableData)
 };
 
 VVariableData::~VVariableData()
diff --git a/src/libs/vpatterndb/vcontainer.h b/src/libs/vpatterndb/vcontainer.h
index 40ce97d79..268e97e7c 100644
--- a/src/libs/vpatterndb/vcontainer.h
+++ b/src/libs/vpatterndb/vcontainer.h
@@ -111,7 +111,7 @@ public:
     QString nspace;
 
 private:
-    VContainerData &operator=(const VContainerData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VContainerData)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/vformula_p.h b/src/libs/vpatterndb/vformula_p.h
index 5a4c97f79..8f161696f 100644
--- a/src/libs/vpatterndb/vformula_p.h
+++ b/src/libs/vpatterndb/vformula_p.h
@@ -31,6 +31,7 @@
 #include "../vmisc/diagnostic.h"
 #include "../vmisc/typedef.h"
 #include "../vmisc/vmath.h"
+#include "../vmisc/defglobal.h"
 
 #include <QSharedData>
 #include <QCoreApplication>
@@ -82,7 +83,7 @@ public:
   QString reason{tr("Formula is empty")};
 
 private:
-    VFormulaData &operator=(const VFormulaData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VFormulaData)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/vnodedetail_p.h b/src/libs/vpatterndb/vnodedetail_p.h
index 0ace58960..b6b415782 100644
--- a/src/libs/vpatterndb/vnodedetail_p.h
+++ b/src/libs/vpatterndb/vnodedetail_p.h
@@ -81,7 +81,7 @@ public:
   bool        reverse;
 
 private:
-    VNodeDetailData &operator=(const VNodeDetailData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VNodeDetailData)
 };
 
 QT_WARNING_POP
diff --git a/src/libs/vpatterndb/vpiece_p.h b/src/libs/vpatterndb/vpiece_p.h
index 06c80a18d..e43d49509 100644
--- a/src/libs/vpatterndb/vpiece_p.h
+++ b/src/libs/vpatterndb/vpiece_p.h
@@ -101,7 +101,7 @@ public:
     QString m_formulaWidth;
 
 private:
-    VPieceData &operator=(const VPieceData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPieceData)
 };
 
 VPieceData::~VPieceData()
diff --git a/src/libs/vpatterndb/vpiecenode_p.h b/src/libs/vpatterndb/vpiecenode_p.h
index 5d563ba1e..b4873e60f 100644
--- a/src/libs/vpatterndb/vpiecenode_p.h
+++ b/src/libs/vpatterndb/vpiecenode_p.h
@@ -118,7 +118,7 @@ public:
     bool m_manualPassmarkLength{false};
 
 private:
-    VPieceNodeData &operator=(const VPieceNodeData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPieceNodeData)
 };
 
 // Friend functions
diff --git a/src/libs/vpatterndb/vpiecepath_p.h b/src/libs/vpatterndb/vpiecepath_p.h
index e0b2b12bc..d87a184df 100644
--- a/src/libs/vpatterndb/vpiecepath_p.h
+++ b/src/libs/vpatterndb/vpiecepath_p.h
@@ -73,7 +73,7 @@ public:
     bool m_lastToCuttingCountour{false};
 
 private:
-    VPiecePathData &operator=(const VPiecePathData &) Q_DECL_EQ_DELETE;
+    Q_DISABLE_ASSIGN(VPiecePathData)
 };
 
 VPiecePathData::~VPiecePathData()