diff --git a/message.xml b/message.xml
index 033218e..6faeb62 100644
--- a/message.xml
+++ b/message.xml
@@ -2,7 +2,7 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <tryton>
-    <data group="1">
+    <data grouped="1">
     <record model="ir.message" id="no_subcontract_warehouse">
         <field name="text">The party "%(party)s" has no production location.</field>
     </record>