diff --git a/odex25_accounting/odex25_account_payment_fix/models/account_payment.py b/odex25_accounting/odex25_account_payment_fix/models/account_payment.py
index 0e6bbc8f8..b985cf0a2 100644
--- a/odex25_accounting/odex25_account_payment_fix/models/account_payment.py
+++ b/odex25_accounting/odex25_account_payment_fix/models/account_payment.py
@@ -66,7 +66,7 @@ class AccountPayment(models.Model):
     #                     line.analytic_account_id = payment.analytic_account_id.id
     #     return res
     def action_post(self):
-      if self.payment_type == 'outbound':
+      if self.filtered(lambda p: p.payment_type == 'outbound'):
          self._check_permission('odex25_account_payment_fix.group_posted')
 
       res = super(AccountPayment, self).action_post()