diff --git a/pkg/coredata/migrations/20260203T132700Z.sql b/pkg/coredata/migrations/20260203T132700Z.sql
index 481cc9794..ec2ef86b6 100644
--- a/pkg/coredata/migrations/20260203T132700Z.sql
+++ b/pkg/coredata/migrations/20260203T132700Z.sql
@@ -512,7 +512,7 @@ ALTER COLUMN
 SET
     NOT NULL,
 ADD
-    PRIMARY KEY (attendee_profile_id);
+    PRIMARY KEY (meeting_id, attendee_profile_id);
 
 ALTER TABLE
     nonconformities