diff --git a/aleksis/core/forms.py b/aleksis/core/forms.py
index 82aa7d4bceca5fcbb1b504e76eacd551ad8fa629..208cbff93f76b7d44451550b73d3b5659ba4aa59 100644
--- a/aleksis/core/forms.py
+++ b/aleksis/core/forms.py
@@ -171,9 +171,7 @@ class AnnouncementForm(ExtensibleForm):
     persons = forms.ModelMultipleChoiceField(
         Person.objects.all(), label=_("Persons"), required=False
     )
-    groups = forms.ModelMultipleChoiceField(
-        queryset=None, label=_("Groups"), required=False
-    )
+    groups = forms.ModelMultipleChoiceField(queryset=None, label=_("Groups"), required=False)
 
     layout = Layout(
         Fieldset(
diff --git a/aleksis/core/views.py b/aleksis/core/views.py
index c7f23dee90c3f7c3806fb186b5e301a5c59ec134..4f166c18bca4eafe50bb9af273e013e2e14c1f44 100644
--- a/aleksis/core/views.py
+++ b/aleksis/core/views.py
@@ -47,7 +47,13 @@ from .registries import (
     person_preferences_registry,
     site_preferences_registry,
 )
-from .tables import AdditionalFieldsTable, GroupsTable, GroupTypesTable, PersonsTable, SchoolTermTable
+from .tables import (
+    AdditionalFieldsTable,
+    GroupsTable,
+    GroupTypesTable,
+    PersonsTable,
+    SchoolTermTable,
+)
 from .util import messages
 from .util.apps import AppConfig
 from .util.core_helpers import objectgetter_optional