diff --git a/sub/GroupUpdater.cpp b/sub/GroupUpdater.cpp
index 894e6f1..7f3c6ad 100644
--- a/sub/GroupUpdater.cpp
+++ b/sub/GroupUpdater.cpp
@@ -27,7 +27,7 @@ namespace NekoGui_sub {
         // 1. "security"
         if (stream->security == "none" || stream->security == "0" || stream->security == "false") {
             stream->security = "";
-        } else if (stream->security == "xtls" || stream->security == "1" || stream->security == "true") {
+        } else if (stream->security == "1" || stream->security == "true") {
             stream->security = "tls";
         }
         // 2. TLS SNI: v2rayN config builder generate sni like this, so set sni here for their format.