diff --git a/include/tool/action_toolbar.h b/include/tool/action_toolbar.h
index 18a9f61f6c..305e892ad0 100644
--- a/include/tool/action_toolbar.h
+++ b/include/tool/action_toolbar.h
@@ -146,7 +146,7 @@ public:
      *
      * @param aFocus is the window to keep focus on (if supported)
      */
-    void Popup( wxWindow* aFocus = nullptr );
+    void Popup( wxWindow* aFocus = nullptr ) override;
 
     /**
      * Set the action group that this palette contains the actions for