diff --git a/bcos-boostssl/bcos-boostssl/websocket/WsConnector.cpp b/bcos-boostssl/bcos-boostssl/websocket/WsConnector.cpp
index 2628c09cfd..d1455a8fb4 100644
--- a/bcos-boostssl/bcos-boostssl/websocket/WsConnector.cpp
+++ b/bcos-boostssl/bcos-boostssl/websocket/WsConnector.cpp
@@ -61,7 +61,7 @@ void WsConnector::connectToWsServer(const std::string& _host, uint16_t _port, bo
 
     // resolve host
     resolver->async_resolve(_host, std::to_string(_port),
-        [this, _host, _port, _disableSsl, endpoint, ioc, ctx, connector, builder, _callback](
+        [_host, _port, _disableSsl, endpoint, ioc, ctx, connector, builder, _callback](
             boost::beast::error_code _ec, boost::asio::ip::tcp::resolver::results_type _results) {
             if (_ec)
             {