diff --git a/backend/src/modules/meeting/meeting.service.ts b/backend/src/modules/meeting/meeting.service.ts
index fec461b..a5b7738 100644
--- a/backend/src/modules/meeting/meeting.service.ts
+++ b/backend/src/modules/meeting/meeting.service.ts
@@ -218,7 +218,9 @@ export class MeetingService {
     // 이름은 표시용 라벨이라 중복 검사 없이 변경한다(코드는 불변).
     if (dto.name) room.name = dto.name;
     room.scheduledAt = dto.scheduledAt ? new Date(dto.scheduledAt) : null;
-    room.allowedUserIds = dto.allowedUserIds?.length ? dto.allowedUserIds : null;
+    room.allowedUserIds = dto.allowedUserIds?.length
+      ? dto.allowedUserIds
+      : null;
     await this.roomRepo.save(room);
     return this.toRoomResponse(room, userId);
   }