diff --git a/aleksis/apps/alsijil/views.py b/aleksis/apps/alsijil/views.py
index 7ce3b26f120952857b613d162aaef6c8d04b50c8..55fc21792f9500fc7d9de0c92dc0d38244a4337f 100644
--- a/aleksis/apps/alsijil/views.py
+++ b/aleksis/apps/alsijil/views.py
@@ -1387,7 +1387,7 @@ class SelectCoursebookView(PermissionRequiredMixin, TemplateView):
         last_week, last_week_year = (
             (current_week - 1, current_year)
             if current_week >= 2
-            else (CalendarWeek.get_last_week_of_year(current_year - 1), current_year - 1)
+            else (CalendarWeek.get_last_week_of_year(current_year - 1).week, current_year - 1)
         )
 
         last_week_query = Q(