diff --git a/services/mux/mux_client.go b/services/mux/mux_client.go
index 9e9ab6a..1cdcaf6 100644
--- a/services/mux/mux_client.go
+++ b/services/mux/mux_client.go
@@ -242,9 +242,9 @@ func (s *MuxClient) getParentConn() (conn net.Conn, err error) {
 				conn = net.Conn(&_conn)
 			}
 		} else {
-			conf, err := utils.TlsConfig(s.cfg.CertBytes, s.cfg.KeyBytes, nil)
-			if err != nil {
-				return nil, err
+			conf, e := utils.TlsConfig(s.cfg.CertBytes, s.cfg.KeyBytes, nil)
+			if e != nil {
+				return nil, e
 			}
 			var _c net.Conn
 			_c, err = s.jumper.Dial(*s.cfg.Parent, time.Millisecond*time.Duration(*s.cfg.Timeout))