diff --git a/toolkit/components/places/src/nsLivemarkService.js b/toolkit/components/places/src/nsLivemarkService.js
index 9dcf11d64f45..50abd71700a8 100644
--- a/toolkit/components/places/src/nsLivemarkService.js
+++ b/toolkit/components/places/src/nsLivemarkService.js
@@ -44,6 +44,8 @@
  *
  * ***** END LICENSE BLOCK ***** */
 
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+
 const Cc = Components.classes;
 const Ci = Components.interfaces;
 const Cr = Components.results;