diff --git a/docs/reference/gateway-config.mdx b/docs/reference/gateway-config.mdx
index 3dde7643d..8ac41631e 100644
--- a/docs/reference/gateway-config.mdx
+++ b/docs/reference/gateway-config.mdx
@@ -420,9 +420,6 @@ overlay_disk_mib = 4096
 guest_tls_ca     = "/var/lib/openshell/guest-tls/ca.pem"
 guest_tls_cert   = "/var/lib/openshell/guest-tls/client.pem"
 guest_tls_key    = "/var/lib/openshell/guest-tls/client-key.pem"
-# Resolved sandbox UID/GID for the rootfs /etc/passwd entry.
-# Defaults to 10001 when unset; matching GID is used if sandbox_gid is empty.
-# sandbox_uid = 20001
 ```
 
 ### Extension Driver