diff --git a/aleksis/apps/alsijil/models.py b/aleksis/apps/alsijil/models.py
index 92e6d30fd89a2f671be6b3494ec19325597605e1..4eecb39f4ca4290c3d650d333a78f22d2dc76279 100644
--- a/aleksis/apps/alsijil/models.py
+++ b/aleksis/apps/alsijil/models.py
@@ -286,8 +286,7 @@ class LessonDocumentation(RegisterObjectRelatedMixin, ExtensibleModel):
         Can be deactivated using site preference ``alsijil__carry_over``.
         """
         all_periods_of_lesson = LessonPeriod.objects.filter(
-            lesson=self.lesson_period.lesson,
-            period__weekday=self.lesson_period.period.weekday,
+            lesson=self.lesson_period.lesson, period__weekday=self.lesson_period.period.weekday,
         )
         for period in all_periods_of_lesson:
             lesson_documentation = period.get_or_create_lesson_documentation(