diff --git a/view/attribute_list_simple.xml b/view/attribute_list_simple.xml
index 2a929c0df1..c98b854b85 100644
--- a/view/attribute_list_simple.xml
+++ b/view/attribute_list_simple.xml
@@ -1,4 +1,6 @@
 <?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
 <tree>
     <field name="string" expand="1"/>
 </tree>