diff --git a/src/idz/sql/teamReservation.ts b/src/idz/sql/teamReservation.ts
index b52ad88..9020360 100644
--- a/src/idz/sql/teamReservation.ts
+++ b/src/idz/sql/teamReservation.ts
@@ -16,7 +16,7 @@ export class SqlTeamReservationRepository
       .where("t.id", teamId)
       .forUpdate();
 
-    await this._txn.modify(lockSql);
+    await this._txn.fetchRow(lockSql);
   }
 
   async occupancyHack(teamId: Id<Team>): Promise<number> {