diff --git a/pkg/rpc/dao/rpc_client.go b/pkg/rpc/dao/rpc_client.go
index 1d7c955..60aeda5 100644
--- a/pkg/rpc/dao/rpc_client.go
+++ b/pkg/rpc/dao/rpc_client.go
@@ -46,5 +46,4 @@ type RPCClient interface {
 	ACMEUserRPC() pb.ACMEUserServiceClient
 	ACMETaskRPC() pb.ACMETaskServiceClient
 	UserRPC() pb.UserServiceClient
-	UserBillRPC() pb.UserBillServiceClient
 }