diff --git a/src/controllers/inpatient_room.ts b/src/controllers/inpatient_room.ts
index e7b445f..461c5c6 100644
--- a/src/controllers/inpatient_room.ts
+++ b/src/controllers/inpatient_room.ts
@@ -75,6 +75,7 @@ export class InpatientRoomController {
 			const res_count = query;
 			const res_list = query
 				.leftJoinAndSelect("InpatientRoom.room", "room")
+				.leftJoinAndSelect("room.serviceclass", "service_class")
 				.orderBy("InpatientRoom." + param.order_field, param.order_direction)
 				.offset(offset)
 				.limit(limit);