diff --git a/browser/base/content/pictureInPicture.js b/browser/base/content/pictureInPicture.js
index ce9cc5a894..e48578cea2 100644
--- a/browser/base/content/pictureInPicture.js
+++ b/browser/base/content/pictureInPicture.js
@@ -3,6 +3,10 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 "use strict";
 
+// The browser XBL bindings resolve these names in their owning window.
+const {utils: Cu, results: Cr} = Components;
+Cu.import("resource://gre/modules/Services.jsm");
+
 var Player = {
   browser: null,
   source: null,