diff --git a/conf/nginx.conf b/conf/nginx.conf
index a904430..ee57ad9 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -22,7 +22,7 @@ location ^~ /packs/ {
 
 location @puma {
   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 X-Forwarded-Proto $scheme;
   proxy_redirect off;
   proxy_pass http://localhost:__PORT__;