diff --git a/addons/event/event.py b/addons/event/event.py
index c3284695ab9..feb0aed9d46 100644
--- a/addons/event/event.py
+++ b/addons/event/event.py
@@ -269,7 +269,7 @@ class event_event(osv.osv):
 
     def button_cancel_send_note(self, cr, uid, ids, context=None):
         message = _("Event has been <b>cancelled</b>.")
-        self.message_post(cr, uid, ids, body=message, subtype="cancel", context=context)
+        self.message_post(cr, uid, ids, body=message, subtype="cancelled", context=context)
         return True
 
     def button_draft_send_note(self, cr, uid, ids, context=None):
@@ -366,7 +366,7 @@ class event_registration(osv.osv):
         return True
 
     def button_reg_cancel(self, cr, uid, ids, context=None, *args):
-        self.message_post(cr, uid, ids, body=_('State set to Cancel'), subtype="cancel", context=context)
+        self.message_post(cr, uid, ids, body=_('State set to Cancel'), subtype="cancelled", context=context)
         return self.write(cr, uid, ids, {'state': 'cancel'})
 
     def mail_user(self, cr, uid, ids, context=None):
diff --git a/addons/event/event_data.xml b/addons/event/event_data.xml
index 65713628de9..bc16fc08aee 100644
--- a/addons/event/event_data.xml
+++ b/addons/event/event_data.xml
@@ -21,8 +21,8 @@
             <field name="name">close</field>
             <field name="model_ids" eval="[(4,ref('event.model_event_event')),(4,ref('event.model_event_registration'))]"/>
         </record>
-        <record id="mail.mail_subtype_cancel" model="mail.message.subtype">
-            <field name="name">cancel</field>
+        <record id="mail.mail_subtype_cancelled" model="mail.message.subtype">
+            <field name="name">cancelled</field>
             <field name="model_ids" eval="[(4,ref('event.model_event_event')),(4,ref('event.model_event_registration'))]"/>
             <field name="default" eval="False"/>
         </record>