1 files changed, 3 insertions, 3 deletions
diff --git a/examples/widgets/graphicsview/diagramscene/diagramscene.h b/examples/widgets/graphicsview/diagramscene/diagramscene.h
index a28eba99e8..17666e208c 100644
--- a/examples/widgets/graphicsview/diagramscene/diagramscene.h
+++ b/examples/widgets/graphicsview/diagramscene/diagramscene.h
@@ -85,9 +85,9 @@ signals:
     void itemSelected(QGraphicsItem *item);
 
 protected:
-    void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
-    void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent);
-    void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent);
+    void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
+    void mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
+    void mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent) Q_DECL_OVERRIDE;
 
 private:
     bool isItemChange(int type);