diff --git a/src/wp-admin/js/post.js b/src/wp-admin/js/post.js
index e6d2ca2ea0..ae5e097cf6 100644
--- a/src/wp-admin/js/post.js
+++ b/src/wp-admin/js/post.js
@@ -412,7 +412,7 @@ jQuery(document).ready( function($) {
 	if ( $('#tagsdiv-post_tag').length ) {
 		window.tagBox && window.tagBox.init();
 	} else {
-		$('#side-sortables, #normal-sortables, #advanced-sortables').children('div.postbox').each(function(){
+		$('.meta-box-sortables').children('div.postbox').each(function(){
 			if ( this.id.indexOf('tagsdiv-') === 0 ) {
 				window.tagBox && window.tagBox.init();
 				return false;