diff --git a/conf/nginx.conf b/conf/nginx.conf
index 1633f86..fa0f465 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -6,7 +6,7 @@ location __PATH__/ {
   client_max_body_size 31M;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection "upgrade";
-  proxy_set_header Host $http_host;
+  proxy_set_header Host $host;
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
   proxy_set_header X-Forward-Proto http;