diff --git a/extensions/places-menu/placeDisplay.js b/extensions/places-menu/placeDisplay.js
index 72e859ae..8e195366 100644
--- a/extensions/places-menu/placeDisplay.js
+++ b/extensions/places-menu/placeDisplay.js
@@ -267,7 +267,7 @@ export class PlacesManager extends EventEmitter {
                     GLib.PRIORITY_DEFAULT, 100, () => {
                         this._bookmarkTimeoutId = 0;
                         this._reloadBookmarks();
-                        return false;
+                        return GLib.SOURCE_REMOVE;
                     });
             });
 
diff --git a/extensions/window-list/extension.js b/extensions/window-list/extension.js
index 4c65b999..dad85d54 100644
--- a/extensions/window-list/extension.js
+++ b/extensions/window-list/extension.js
@@ -1476,7 +1476,7 @@ class WindowList extends St.Widget {
         this._dndWindow = null;
         this._dndTimeoutId = 0;
 
-        return false;
+        return GLib.SOURCE_REMOVE;
     }
 
     _onDestroy() {