diff --git a/src/Gui/DlgRevertToBackupConfigImp.h b/src/Gui/DlgRevertToBackupConfigImp.h
index 9c6c79cab9..ce572fb42c 100644
--- a/src/Gui/DlgRevertToBackupConfigImp.h
+++ b/src/Gui/DlgRevertToBackupConfigImp.h
@@ -47,7 +47,7 @@ public Q_SLOTS:
     void onItemSelectionChanged();
 
 protected:
-    void changeEvent(QEvent *e);
+    void changeEvent(QEvent *e) override;
     void showEvent(QShowEvent* event) override;
 
 private: