diff --git a/src/Gui/Action.h b/src/Gui/Action.h
index e3e7a8673e..cd7d0ad3a8 100644
--- a/src/Gui/Action.h
+++ b/src/Gui/Action.h
@@ -70,7 +70,9 @@ public:
     void setWhatsThis (const QString &);
     QString whatsThis() const;
     void setMenuRole(QAction::MenuRole menuRole);
-    QAction *action() {return _action;};
+    QAction *action() const {
+        return _action;
+    }
 
 public Q_SLOTS:
     virtual void onActivated ();