diff --git a/conf/nginx.conf b/conf/nginx.conf
index e5ae0c1..b7baa04 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -12,7 +12,7 @@ location /api/ws {
 
   proxy_pass http://127.0.0.1:__PORT__;
   proxy_set_header X-Real-IP $remote_addr;
-  proxy_set_header Host $http_host;
+  proxy_set_header Host $host;
   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection $connection_upgrade;