diff --git a/addons/mail/mail_thread.py b/addons/mail/mail_thread.py
index c0d6ac90fe6..d798007275f 100644
--- a/addons/mail/mail_thread.py
+++ b/addons/mail/mail_thread.py
@@ -623,14 +623,8 @@ class mail_thread(osv.AbstractModel):
         return self.message_subscribe(cr, uid, ids, partner_ids, context=context)
 
     def message_subscribe(self, cr, uid, ids, partner_ids, context=None):
-        """ Add partners to the records followers.
-            :param partner_ids: a list of partner_ids to subscribe
-            :param return: new value of followers if read_back key in context
-        """
-        self.write(cr, uid, ids, {'message_follower_ids': [(4, pid) for pid in partner_ids]}, context=context)
-        if context and context.get('read_back'):
-            return [follower.id for thread in self.browse(cr, uid, ids, context=context) for follower in thread.message_follower_ids]
-        return []
+        """ Add partners to the records followers. """
+        return self.write(cr, uid, ids, {'message_follower_ids': [(4, pid) for pid in partner_ids]}, context=context)
 
     def message_unsubscribe_users(self, cr, uid, ids, user_ids=None, context=None):
         """ Wrapper on message_subscribe, using users. If user_ids is not
@@ -640,14 +634,8 @@ class mail_thread(osv.AbstractModel):
         return self.message_unsubscribe(cr, uid, ids, partner_ids, context=context)
 
     def message_unsubscribe(self, cr, uid, ids, partner_ids, context=None):
-        """ Remove partners from the records followers.
-            :param partner_ids: a list of partner_ids to unsubscribe
-            :param return: new value of followers if read_back key in context
-        """
-        self.write(cr, uid, ids, {'message_follower_ids': [(3, pid) for pid in partner_ids]}, context=context)
-        if context and context.get('read_back'):
-            return [follower.id for thread in self.browse(cr, uid, ids, context=context) for follower in thread.message_follower_ids]
-        return []
+        """ Remove partners from the records followers. """
+        return self.write(cr, uid, ids, {'message_follower_ids': [(3, pid) for pid in partner_ids]}, context=context)
 
     #------------------------------------------------------
     # Thread state