diff --git a/api/reward/reward.go b/api/reward/reward.go
index aeae2b1..8379a54 100644
--- a/api/reward/reward.go
+++ b/api/reward/reward.go
@@ -12,7 +12,7 @@ import (
 
 type IRewardV1 interface {
 	List(ctx context.Context, req *v1.ListReq) (res *v1.ListRes, err error)
-	ListInternetCharge(ctx context.Context, req *v1.ListInternetChargeReq) (res *v1.ListInternetChargeRes, err error)
+	ListInternetCharge(ctx context.Context, req *v1.ListInternetChargeReq) (res *v1.ListRes, err error)
 	Create(ctx context.Context, req *v1.CreateReq) (res *v1.CreateRes, err error)
 	Update(ctx context.Context, req *v1.UpdateReq) (res *v1.UpdateRes, err error)
 	Delete(ctx context.Context, req *v1.DeleteReq) (res *v1.DeleteRes, err error)