diff --git a/aleksis/apps/alsijil/views.py b/aleksis/apps/alsijil/views.py
index 1f21e903e0e1c9a4a0746b51bf66a6141e1cead8..a749c1045972118c81247192e2edcdf9cf5a3658 100644
--- a/aleksis/apps/alsijil/views.py
+++ b/aleksis/apps/alsijil/views.py
@@ -336,7 +336,7 @@ def week_view(
                             week=wanted_week.week,
                             year=wanted_week.year,
                             lesson_period__in=lesson_periods_pk,
-                        ).prefetch_related("lesson_period__substitutions__subject")
+                        )
                     ),
                 }
             )