diff --git a/addons/email_template/wizard/mail_compose_message.py b/addons/email_template/wizard/mail_compose_message.py
index c68f884f7ef..a4fd749979c 100644
--- a/addons/email_template/wizard/mail_compose_message.py
+++ b/addons/email_template/wizard/mail_compose_message.py
@@ -102,14 +102,12 @@ class mail_compose_message(osv.osv_memory):
                             'res_id' : ids[0] if ids else False
                         }
                         att_ids.append(attachment_obj.create(cr, uid, data_attach))
-                    values['subtype'] = 'html'
                     values['attachment_ids'] = att_ids
         else:
             # restore defaults
             values = self.default_get(cr, uid, self.fields_get_keys(cr, uid), context)
             values.update(use_template=use_template, template_id=template_id)
 
-        values['subtype'] = 'html'    
         return {'value': values}