diff --git a/src/entity/room.ts b/src/entity/room.ts
index feaf580..2e8aaac 100644
--- a/src/entity/room.ts
+++ b/src/entity/room.ts
@@ -23,6 +23,12 @@ export class Room {
 	})
 	room: string;
 
+	@Column({
+		nullable: true,
+		length: 128,
+	})
+	number: string;
+
 	@Column({
 		nullable: false,
 		length: 128,
diff --git a/src/entity/room_number.ts b/src/entity/room_number.ts
index 7f6059e..efcdcf8 100644
--- a/src/entity/room_number.ts
+++ b/src/entity/room_number.ts
@@ -14,10 +14,6 @@ export class RoomNumber {
     })
     number: string;
 
-    @ManyToOne(() => Department, { nullable: false, onDelete: "NO ACTION" })
-    @JoinColumn()
-    department: Department;
-
     @CreateDateColumn()
     created_at: Date;