diff --git a/tests/test_account.py b/tests/test_account.py
index 9f4a6ebf9b..4e96f47845 100644
--- a/tests/test_account.py
+++ b/tests/test_account.py
@@ -1067,7 +1067,7 @@ class AccountTestCase(ModuleTestCase):
                                         }])],
                         }])
             self.assertListEqual(
-                tax_rule.apply(tax, {}),  [target_tax.id, tax.id])
+                tax_rule.apply(tax, {}), [target_tax.id, tax.id])
 
 
 def suite():