Index: wp-includes/js/jquery/jquery-migrate.js
===================================================================
--- wp-includes/js/jquery/jquery-migrate.js	(revision 23180)
+++ wp-includes/js/jquery/jquery-migrate.js	(working copy)
@@ -1,5 +1,5 @@
 /*!
- * jQuery Migrate - v1.0.0b1 - 2012-12-16
+ * jQuery Migrate - v1.0.0pre - 2012-12-17
  * https://github.com/jquery/jquery-migrate
  * Copyright 2012 jQuery Foundation and other contributors; Licensed MIT
  */
@@ -296,7 +296,7 @@
 var eventAdd = jQuery.event.add,
 	eventRemove = jQuery.event.remove,
 	eventTrigger = jQuery.event.trigger,
-	oldToggle = jQuery.event.toggle,
+	oldToggle = jQuery.fn.toggle,
 	oldLive = jQuery.fn.live,
 	oldDie = jQuery.fn.die,
 	ajaxEvents = "ajaxStart|ajaxStop|ajaxSend|ajaxComplete|ajaxError|ajaxSuccess",