diff --git a/services/sync/BookmarksSyncService.js b/services/sync/BookmarksSyncService.js
index 7281abc4add6..9cc4ca5e4024 100644
--- a/services/sync/BookmarksSyncService.js
+++ b/services/sync/BookmarksSyncService.js
@@ -1585,7 +1585,7 @@ DAVCollection.prototype = {
       return this.__auth;
 
     try {
-      let URI = makeURI(this._baseURL);
+      let URI = makeURI(this._userURL);
       let username = 'nobody@mozilla.com';
       let password;