diff --git a/app/dao/service_sms_sender_dao.py b/app/dao/service_sms_sender_dao.py
index 6a084e644..a2c4fa9ea 100644
--- a/app/dao/service_sms_sender_dao.py
+++ b/app/dao/service_sms_sender_dao.py
@@ -107,5 +107,3 @@ def _raise_when_no_default(old_default):
     # check that the update is not updating the only default to false
     if not old_default:
         raise Exception("You must have at least one letter contact as the default.", 400)
-
-
diff --git a/tests/app/dao/test_service_sms_sender_dao.py b/tests/app/dao/test_service_sms_sender_dao.py
index ebe641786..a3d05e021 100644
--- a/tests/app/dao/test_service_sms_sender_dao.py
+++ b/tests/app/dao/test_service_sms_sender_dao.py
@@ -101,7 +101,7 @@ def test_dao_add_sms_sender_for_service_switches_default(notify_db_session):
 
 def test_dao_update_service_sms_sender(notify_db_session):
     service = create_service(sms_sender='first_sms')
-    service_sms_senders = ServiceSmsSender.query.filter_by(service_id =service.id).all()
+    service_sms_senders = ServiceSmsSender.query.filter_by(service_id=service.id).all()
     assert len(service_sms_senders) == 1
     sms_sender_to_update = service_sms_senders[0]