diff --git a/docs/document/level-2/tproxy_ipv4_and_ipv6.md b/docs/document/level-2/tproxy_ipv4_and_ipv6.md
index edf08dc..f906de5 100644
--- a/docs/document/level-2/tproxy_ipv4_and_ipv6.md
+++ b/docs/document/level-2/tproxy_ipv4_and_ipv6.md
@@ -49,8 +49,7 @@ title: TProxy 透明代理 (ipv4 and ipv6)
       },
       "streamSettings": {
         "sockopt": {
-          "tproxy": "tproxy",
-          "mark": 255
+          "tproxy": "tproxy"
         }
       }
     },