diff --git a/addons/mail/tests/test_message_read.py b/addons/mail/tests/test_message_read.py
index ebb39c92a02..3484b684e6d 100644
--- a/addons/mail/tests/test_message_read.py
+++ b/addons/mail/tests/test_message_read.py
@@ -41,6 +41,10 @@ class test_mail_access_rights(TestMailBase):
         msg_id8 = self.group_pigs.message_post(body='2-1-1', subtype='mt_comment', parent_id=msg_id4)
         msg_id9 = self.group_pigs.message_post(body='1-1-1', subtype='mt_comment', parent_id=msg_id3)
         msg_id10 = self.group_pigs.message_post(body='2-1-1', subtype='mt_comment', parent_id=msg_id4)
+        # list of child message id
+        child_msg_id = [msg_id3, msg_id4,msg_id5,msg_id6,msg_id7,msg_id8,msg_id9,msg_id10]
+        # update notified_partner_ids in all child message for the subscribe message
+        self.mail_message.write(cr, uid, child_msg_id, {'notified_partner_ids': [(6, 0, [user_admin.id])]})
         msg_ids = [msg_id10, msg_id9, msg_id8, msg_id7, msg_id6, msg_id5, msg_id4, msg_id3, msg_id2, msg_id1, msg_id0]
         ordered_msg_ids = [msg_id2, msg_id4, msg_id6, msg_id8, msg_id10, msg_id1, msg_id3, msg_id5, msg_id7, msg_id9, msg_id0]