diff --git a/js/ui/workspace.js b/js/ui/workspace.js
index 1d319e8ad..a4b0c2599 100644
--- a/js/ui/workspace.js
+++ b/js/ui/workspace.js
@@ -295,7 +295,7 @@ const WindowClone = new Lang.Class({
             else
                 realWindow = child.source;
 
-            realWindow.disconnect(child._updateId);
+            realWindow.meta_window.disconnect(child._updateId);
             realWindow.disconnect(child._destroyId);
         }));
     },
diff --git a/js/ui/workspaceThumbnail.js b/js/ui/workspaceThumbnail.js
index 3e71e9c65..7b7bc908e 100644
--- a/js/ui/workspaceThumbnail.js
+++ b/js/ui/workspaceThumbnail.js
@@ -176,7 +176,7 @@ const WindowClone = new Lang.Class({
         this.actor.get_children().forEach(function(child) {
             let realWindow = child.source;
 
-            realWindow.disconnect(child._updateId);
+            realWindow.meta_window.disconnect(child._updateId);
             realWindow.disconnect(child._destroyId);
         });
     },