diff --git a/servlet.go b/servlet.go
index 1e5f5d6..2446a34 100644
--- a/servlet.go
+++ b/servlet.go
@@ -91,7 +91,6 @@ func (s *rpcServlet) Start(parentCTX cuc.Context, conn interface{}, doneChan cha
 }
 
 func (s *rpcServlet) Send(method string, args ...interface{}) (err error) {
-	s.sendMtx.RLock()
 	noti := &notification{
 		method: method,
 		args:   args,
@@ -101,7 +100,6 @@ func (s *rpcServlet) Send(method string, args ...interface{}) (err error) {
 	}
 
 	s.responseQueueChan <- rs
-	s.sendMtx.RUnlock()
 	return nil
 }