Index: branches/version-2_13-dev/data/class/helper/SC_Helper_Mail.php
===================================================================
--- branches/version-2_13-dev/data/class/helper/SC_Helper_Mail.php	(revision 23562)
+++ branches/version-2_13-dev/data/class/helper/SC_Helper_Mail.php	(revision 23574)
@@ -222,4 +222,5 @@
             $where = 'order_id = ? AND shipping_id = ?';
             $arrWhereVal = array($order_id, $arrRet[$key]['shipping_id']);
+            $objQuery->setOrder('order_detail_id');
             $arrItems = $objQuery->select($col, $from, $where, $arrWhereVal);
             $arrRet[$key]['shipment_item'] = $arrItems;