diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 39c202065b9..261e864163c 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -363,7 +363,7 @@ else if ($action == 'confirm_valid' && $confirm == 'yes' && $user->rights->factu
         if (! $idwarehouse || $idwarehouse == -1)
         {
             $error++;
-            $mesgs[]=$langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse"));
+            setEventMessage($langs->trans('ErrorFieldRequired',$langs->transnoentitiesnoconv("Warehouse")),'errors');
             $action='';
         }
     }