diff --git a/abonapp/models.py b/abonapp/models.py
index f291155..ce857b1 100644
--- a/abonapp/models.py
+++ b/abonapp/models.py
@@ -76,7 +76,7 @@ class AbonTariff(models.Model):
     class Meta:
         db_table = 'abonent_tariff'
         permissions = (
-            ('can_complete_service', _('finish service perm'))
+            ('can_complete_service', _('finish service perm')),
         )