--- a/toolkit/components/places/PlacesSyncUtils.jsm
+++ b/toolkit/components/places/PlacesSyncUtils.jsm
@@ -11,18 +11,16 @@ const { classes: Cc, interfaces: Ci, res
 Cu.importGlobalProperties(["URL", "URLSearchParams"]);
 
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "Log",
                                   "resource://gre/modules/Log.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
                                   "resource://gre/modules/PlacesUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "Preferences",
-                                  "resource://gre/modules/Preferences.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Task",
                                   "resource://gre/modules/Task.jsm");
 
 /**
  * This module exports functions for Sync to use when applying remote
  * records. The calls are similar to those in `Bookmarks.jsm` and
  * `nsINavBookmarksService`, with special handling for smart bookmarks,
  * tags, keywords, synced annotations, and missing parents.