diff --git a/registry/registry.go b/registry/registry.go
index f41936c..6d0a016 100644
--- a/registry/registry.go
+++ b/registry/registry.go
@@ -6,5 +6,5 @@ import (
 
 type RPCInvoker interface {
 	HasMethod(method string) bool
-	Invoke(codec protocol.RegistryCodec) (result interface{}, err error)
+	Invoke(codec protocol.RegistryCodec, leadingParams ...interface{}) (result interface{}, err error)
 }