diff --git a/controller.go b/controller.go
index f346a1f..0900fa3 100644
--- a/controller.go
+++ b/controller.go
@@ -17,7 +17,7 @@ type Controller interface {
 }
 
 type GRpController interface {
-	GetGRpcServiceDesc() grpc.ServiceDesc
+	GetGRpcServiceDesc() *grpc.ServiceDesc
 }
 
 type BaseController struct {