Index: /trunk/include/picture_comment.inc.php
===================================================================
--- /trunk/include/picture_comment.inc.php	(revision 13088)
+++ /trunk/include/picture_comment.inc.php	(revision 13156)
@@ -134,5 +134,5 @@
 
     $template->assign(array(
-      'COMMENTS_ORDER_URL' => duplicate_picture_url().'&comments_order='.($comments_order == 'ASC' ? 'DESC' : 'ASC'),
+      'COMMENTS_ORDER_URL' => add_url_params( duplicate_picture_url(), array('comments_order'=> ($comments_order == 'ASC' ? 'DESC' : 'ASC') ) ),
       'COMMENTS_ORDER_TITLE' => $comments_order == 'ASC' ? l10n('old → new') : l10n('new → old'),
       ));