diff --git a/nodeconductor/structure/serializers.py b/nodeconductor/structure/serializers.py
index <HASH>..<HASH> 100644
--- a/nodeconductor/structure/serializers.py
+++ b/nodeconductor/structure/serializers.py
@@ -756,6 +756,7 @@ class ServiceSettingsCertificationsUpdateSerializer(serializers.Serializer):
         instance.certifications.add(*certifications)
         return instance
 
+
 class ServiceSettingsSerializer(PermissionFieldFilteringMixin,
                                 core_serializers.AugmentedSerializerMixin,
                                 serializers.HyperlinkedModelSerializer):
diff --git a/nodeconductor/structure/views.py b/nodeconductor/structure/views.py
index <HASH>..<HASH> 100644
--- a/nodeconductor/structure/views.py
+++ b/nodeconductor/structure/views.py
@@ -1097,7 +1097,6 @@ class ServiceSettingsViewSet(core_mixins.EagerLoadMixin,
     update_certifications_permissions = [can_user_update_settings]
 
 
-
 class ServiceMetadataViewSet(viewsets.GenericViewSet):
     # Fix for schema generation
     queryset = []
Update code formatting [WAL-<I>]