diff --git a/contract_payment_auto/__manifest__.py b/contract_payment_auto/__manifest__.py
index 36dce50c..2cc48f99 100644
--- a/contract_payment_auto/__manifest__.py
+++ b/contract_payment_auto/__manifest__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # Copyright 2017 LasLabs Inc.
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
diff --git a/contract_payment_auto/tests/test_contract.py b/contract_payment_auto/tests/test_contract.py
index 4d56fcfd..b3211c62 100644
--- a/contract_payment_auto/tests/test_contract.py
+++ b/contract_payment_auto/tests/test_contract.py
@@ -78,10 +78,10 @@ class TestContract(common.HttpCase):
         self.assertEqual(len(invoice), 1)
         self.assertEqual(invoice._name, 'account.invoice')
 
-    def _create_invoice(self, open=False, sent=False):
+    def _create_invoice(self, opened=False, sent=False):
         self.contract.is_auto_pay = False
         invoice = self.contract._recurring_create_invoice()
-        if open or sent:
+        if opened or sent:
             invoice.action_invoice_open()
         if sent:
             invoice.sent = True