diff --git a/servlet/rpc-servlet.go b/servlet/rpc-servlet.go
index f3d7011..c6ef0eb 100644
--- a/servlet/rpc-servlet.go
+++ b/servlet/rpc-servlet.go
@@ -67,6 +67,9 @@ func (s *RPCServlets) Handle(servletCtx server.ServletCtx,
 			}
 
 			reply, err = s.RPCInvoker.Invoke(src)
+			if !src.HasResponse() {
+				break
+			}
 			replyBuff, err = src.NewResponse(reply, err)
 			if nil != err {
 				logging.Logger().Error(err)