Index: wp-includes/post.php
===================================================================
--- wp-includes/post.php	(revision 18803)
+++ wp-includes/post.php	(working copy)
@@ -3447,7 +3447,7 @@
 	}
 
 	$orderby_array = array();
-	$allowed_keys = array('author', 'post_author', 'date', 'post_date', 'title', 'post_title', 'modified',
+	$allowed_keys = array('author', 'post_author', 'date', 'post_date', 'title', 'post_title', 'name', 'post_name', 'modified',
 						  'post_modified', 'modified_gmt', 'post_modified_gmt', 'menu_order', 'parent', 'post_parent',
 						  'ID', 'rand', 'comment_count');
 	foreach ( explode( ',', $sort_column ) as $orderby ) {