1 files changed, 1 insertions, 1 deletions
diff --git a/models.py b/models.py
index 40406e3..40849c6 100644
--- a/models.py
+++ b/models.py
@@ -72,7 +72,7 @@ class Timetable(SlugModel):
 
 class GroupManager(Manager):
     def get_parents(self, group):
-        groups_criteria = Q(subgroup="") | Q(subgroup__startswith=group.subgroup)
+        groups_criteria = Q(subgroup="")
 
         if len(group.subgroup) != 0:
             groups_criteria |= reduce(lambda x, y: x | y,