Index: wp-includes/post.php
===================================================================
--- wp-includes/post.php	(revision 21157)
+++ wp-includes/post.php	(working copy)
@@ -1244,7 +1244,7 @@
 		'parent_item_colon' => array( null, __('Parent Page:') ),
 		'all_items' => array( __( 'All Posts' ), __( 'All Pages' ) )
 	);
-	$nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];
+
 	return _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );
 }