diff --git a/account_partner_required/account.py b/account_partner_required/account.py
index 9f956876..d888ebbd 100644
--- a/account_partner_required/account.py
+++ b/account_partner_required/account.py
@@ -95,5 +95,5 @@ class account_move_line(orm.Model):
     _constraints = [
         (_check_partner_required,
          _check_partner_required_msg,
-         ['partner_id']),
+         ['partner_id', 'account_id']),
     ]