diff --git a/docs/DEPLOYMENT.md b/docs/DEPLOYMENT.md
index 891c23a..aff55ba 100644
--- a/docs/DEPLOYMENT.md
+++ b/docs/DEPLOYMENT.md
@@ -83,7 +83,7 @@ server {
         proxy_pass http://127.0.0.1:3000;
 
         # ⚠️ 反代必须覆写 XFF——见下方「⚠️ 反代必须覆写 XFF」说明。
-        # proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_set_header Host $host;