Index: branches/rel/html/shopping/payment.php
===================================================================
--- branches/rel/html/shopping/payment.php	(revision 13525)
+++ branches/rel/html/shopping/payment.php	(revision 13526)
@@ -103,5 +103,5 @@
 
 if (!sfisInt($objFormParam->getValue('payment_id'))) {
-    sfDispPage();
+    sfDispError();
 }