diff --git a/README.md b/README.md
index 0b5c930..74615d6 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ location / {
     proxy_read_timeout 300;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "upgrade";
-    proxy_set_header Host $host;
+    proxy_set_header Host $http_host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Real-PORT $remote_port;
 }