diff --git a/aleksis/apps/alsijil/model_extensions.py b/aleksis/apps/alsijil/model_extensions.py
index 5a2f2d53e9acbc006c1ae8db472a88e071fd9212..4c5872aa8e3cbe73cd06b48e99cb75392ff5ea19 100644
--- a/aleksis/apps/alsijil/model_extensions.py
+++ b/aleksis/apps/alsijil/model_extensions.py
@@ -51,7 +51,7 @@ def mark_absent(
     for lesson_period in lesson_periods:
         sub = lesson_period.get_substitution()
         if sub and sub.is_cancelled:
-                continue
+            continue
 
         with reversion.create_revision():
             personal_note, created = PersonalNote.objects.update_or_create(