diff --git a/src/modules/coupons/providers/coupon.service.ts b/src/modules/coupons/providers/coupon.service.ts
index 46985be..dc69a57 100644
--- a/src/modules/coupons/providers/coupon.service.ts
+++ b/src/modules/coupons/providers/coupon.service.ts
@@ -17,7 +17,7 @@ export class CouponService {
     private readonly couponRepository: CouponRepository,
     private readonly restRepository: RestRepository,
     private readonly em: EntityManager,
-  ) {}
+  ) { }
 
   async create(restId: string, createCouponDto: CreateCouponDto): Promise<Coupon> {
     const restaurant = await this.restRepository.findOne({ id: restId });
@@ -257,7 +257,7 @@ export class CouponService {
     return prefix + '-' + result;
   }
 
-  async generateCouponCode(restId: string){
+  async generateCouponCode(restId: string): Promise<{ code: string }> {
     const restaurant = await this.restRepository.findOne({ id: restId });
     if (!restaurant) {
       throw new NotFoundException(RestMessage.NOT_FOUND);
@@ -266,6 +266,6 @@ export class CouponService {
     const existing = await this.couponRepository.findOne({ code, restaurant: { id: restId } });
 
     if (existing) return this.generateCouponCode(restId);
-    return {code};
+    return { code };
   }
 }