diff --git a/aleksis/apps/alsijil/data_checks.py b/aleksis/apps/alsijil/data_checks.py
index b4d115d9cd7bbd14d376d411e0297dd9d4a767d8..5f0272f888a0588b53c5cf37204bcb511d882f71 100644
--- a/aleksis/apps/alsijil/data_checks.py
+++ b/aleksis/apps/alsijil/data_checks.py
@@ -6,12 +6,7 @@ from django.utils.translation import gettext as _
 
 from calendarweek import CalendarWeek
 
-from aleksis.core.data_checks import (
-    DATA_CHECK_REGISTRY,
-    DataCheck,
-    IgnoreSolveOption,
-    SolveOption,
-)
+from aleksis.core.data_checks import DATA_CHECK_REGISTRY, DataCheck, IgnoreSolveOption, SolveOption
 
 
 class DeleteRelatedObjectSolveOption(SolveOption):
@@ -48,6 +43,7 @@ class NoPersonalNotesInCancelledLessonsDataCheck(DataCheck):
     @classmethod
     def check_data(cls):
         from aleksis.core.models import DataCheckResult
+
         from .models import PersonalNote
 
         ct = ContentType.objects.get_for_model(PersonalNote)
@@ -60,9 +56,7 @@ class NoPersonalNotesInCancelledLessonsDataCheck(DataCheck):
 
         for note in personal_notes:
             logging.info(f"Check personal note {note}")
-            sub = note.lesson_period.get_substitution(
-                CalendarWeek(week=note.week, year=note.year)
-            )
+            sub = note.lesson_period.get_substitution(CalendarWeek(week=note.week, year=note.year))
             result = DataCheckResult.objects.get_or_create(
                 check=cls.name, content_type=ct, object_id=note.id
             )
@@ -82,6 +76,7 @@ class NoGroupsOfPersonsSetInPersonalNotesDataCheck(DataCheck):
     @classmethod
     def check_data(cls):
         from aleksis.core.models import DataCheckResult
+
         from .models import PersonalNote
 
         ct = ContentType.objects.get_for_model(PersonalNote)
diff --git a/aleksis/apps/alsijil/models.py b/aleksis/apps/alsijil/models.py
index ace13f6daccddd75525f687ca166ad9d0113da25..15700302b50f99e00dde171e43be75fc6a1465d1 100644
--- a/aleksis/apps/alsijil/models.py
+++ b/aleksis/apps/alsijil/models.py
@@ -101,8 +101,7 @@ class PersonalNote(ExtensibleModel, WeekRelatedMixin):
     def get_absolute_url(self):
         return (
             reverse(
-                "lesson_by_week_and_period",
-                args=[self.year, self.week, self.lesson_period.pk],
+                "lesson_by_week_and_period", args=[self.year, self.week, self.lesson_period.pk],
             )
             + "#personal-notes"
         )