diff --git a/aleksis/core/feeds.py b/aleksis/core/feeds.py
index 7318fd64d4af80bb5b92adf5417e64f444a67542..537da1710f0debdff45900c617ccc017a7d787ba 100644
--- a/aleksis/core/feeds.py
+++ b/aleksis/core/feeds.py
@@ -2,6 +2,7 @@ from django.conf import settings
 from django.utils.formats import date_format
 from django.utils.functional import classproperty
 from django.utils.translation import gettext_lazy as _
+
 from django_ical.utils import build_rrule_from_text
 from django_ical.views import ICalFeed
 
@@ -13,7 +14,7 @@ class PersonalICalFeedBase(ICalFeed):
     @property
     def product_id(self):
         lang = self.request.LANGUAGE_CODE
-        title = get_site_preferences()['general__title']
+        title = get_site_preferences()["general__title"]
         return f"-//AlekSIS//{title}//{lang}"
 
     link = settings.BASE_URL
diff --git a/aleksis/core/models.py b/aleksis/core/models.py
index e310c7baaae51d00f6e04e9d426fc5c7203615c0..897ba83729086d02a6c7e79889cfb00225283b00 100644
--- a/aleksis/core/models.py
+++ b/aleksis/core/models.py
@@ -1,10 +1,10 @@
 # flake8: noqa: DJ01
 import base64
 import hmac
+import uuid
 from datetime import date, datetime, timedelta
 from typing import Any, Iterable, List, Optional, Sequence, Union
 from urllib.parse import urlparse
-import uuid
 
 from django.conf import settings
 from django.contrib.auth import get_user_model
@@ -52,8 +52,8 @@ from phonenumber_field.modelfields import PhoneNumberField
 from polymorphic.models import PolymorphicModel
 
 from aleksis.core.data_checks import BrokenDashboardWidgetDataCheck, DataCheck, DataCheckRegistry
-from .feeds import PersonalICalFeedBase
 
+from .feeds import PersonalICalFeedBase
 from .managers import (
     CurrentSiteManagerWithoutMigrations,
     GroupManager,
diff --git a/aleksis/core/views.py b/aleksis/core/views.py
index e8356a1a6a9f5542e4aaf40aab9a8d42adcc8e6b..f12530919a3749228aac395b3e1527fcd897ef4c 100644
--- a/aleksis/core/views.py
+++ b/aleksis/core/views.py
@@ -102,10 +102,10 @@ from .models import (
     OAuthApplication,
     PDFFile,
     Person,
+    PersonalICalUrl,
     PersonInvitation,
     SchoolTerm,
     TaskUserAssignment,
-    PersonalICalUrl,
 )
 from .registries import (
     group_preferences_registry,