diff --git a/addons/mail/mail_group.py b/addons/mail/mail_group.py
index 0cfc590a996..966bdd2a1c4 100644
--- a/addons/mail/mail_group.py
+++ b/addons/mail/mail_group.py
@@ -81,7 +81,7 @@ class mail_group(osv.osv):
         result = dict.fromkeys(ids)
         for id in ids:
             result[id] = {}
-            result[id]['member_ids'] = self.message_get_subscribers_ids(cr, uid, [id], context=context)
+            result[id]['member_ids'] = self.message_get_subscribers(cr, uid, [id], True, context=context)
             result[id]['member_count'] = len(result[id]['member_ids'])
             result[id]['is_subscriber'] = uid in result[id]['member_ids']
         return result