diff --git a/addons/mail/data/mail_data.xml b/addons/mail/data/mail_data.xml
index f48984c46b4..9b91c519348 100644
--- a/addons/mail/data/mail_data.xml
+++ b/addons/mail/data/mail_data.xml
@@ -29,7 +29,6 @@
 
         <record id="mt_comment" model="mail.message.subtype">
             <field name="name">Discussions</field>
-            <field name="default" eval="False"/>
         </record>
     </data>
 </openerp>