diff --git a/js/ui/popupMenu.js b/js/ui/popupMenu.js
index 155a8546f..85acb70b2 100644
--- a/js/ui/popupMenu.js
+++ b/js/ui/popupMenu.js
@@ -1289,6 +1289,7 @@ const PopupDummyMenu = new Lang.Class({
 
     open: function() { this.emit('open-state-changed', true); },
     close: function() { this.emit('open-state-changed', false); },
+    toggle: function() {},
     destroy: function() {
         this.emit('destroy');
     },