1 files changed, 1 insertions, 1 deletions
diff --git a/models.py b/models.py
index cd19259..b260275 100644
--- a/models.py
+++ b/models.py
@@ -152,7 +152,7 @@ class CourseManager(Manager):
     def get_courses_for_group(self, group, **criteria):
         return self.get_queryset() \
                    .filter(groups__in=Group.objects.get_parents(group), **criteria) \
-                   .order_by("begin")
+                   .order_by("begin").prefetch_related("rooms")
 
     def get_weeks(self, **criteria):
         return self.get_queryset() \