diff --git a/tournaments/migrations/0109_special_store_id.py b/tournaments/migrations/0109_special_store_id.py
index 3ae3a27..321e416 100644
--- a/tournaments/migrations/0109_special_store_id.py
+++ b/tournaments/migrations/0109_special_store_id.py
@@ -37,10 +37,11 @@ def init_store_id(apps, schema_editor):
         if instance.team_registration:
             id = instance.team_registration.tournament.id
         else:
-            if instance.match.round:
-                id = instance.round.tournament.id
+            match = instance.match
+            if match.round:
+                id = match.round.tournament.id
             else:
-                id = instance.group_stage.tournament.id
+                id = match.group_stage.tournament.id
         instance.store_id = str(id)
         instance.save()