1 files changed, 1 insertions, 2 deletions
diff --git a/models.py b/models.py
index 9838377..bde27a7 100644
--- a/models.py
+++ b/models.py
@@ -101,8 +101,7 @@ class Group(models.Model):
     def corresponds_to(self, timetable_id, mention, subgroup):
         subgroup_corresponds = True
         if self.subgroup is not None and subgroup is not None:
-            subgroup_corresponds = subgroup.startswith(self.subgroup) or \
-                                   self.subgroup.startswith(subgroup)
+            subgroup_corresponds = self.subgroup.startswith(subgroup)
 
         return self.timetable.id == timetable_id and \
             (self.mention.startswith(mention) or \