diff --git a/recurring_payment_stripe/models/account_move.py b/recurring_payment_stripe/models/account_move.py
index 8de05474b7..5da670b5d5 100644
--- a/recurring_payment_stripe/models/account_move.py
+++ b/recurring_payment_stripe/models/account_move.py
@@ -17,7 +17,7 @@ def action_register_payment(self):
         payment on subscriptions.
         """
         for invoice in self:
-            res = super(AccountMove, self).action_register_payment()
+            super(AccountMove, self).action_register_payment()
             # Find the subscription associated with the invoice, if it exists
             subscription = invoice.subscription_id