diff --git a/conf/nginx.conf b/conf/nginx.conf
index 0be2d20..32bc663 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -4,7 +4,7 @@ location __PATH__/ {
   proxy_set_header X-Real-IP $remote_addr;
   proxy_http_version 1.1;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-  proxy_set_header Host $http_host;
+  proxy_set_header Host $host;
   proxy_set_header Connection "Upgrade";
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header X-Nginx-Proxy true;