diff --git a/conf/nginx.conf b/conf/nginx.conf
index 0d42dd8..7854cab 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -2,7 +2,7 @@ location / {
   proxy_pass http://localhost:__PORT__/;
   proxy_http_version 1.1;
 
-  proxy_set_header Host $http_host;
+  proxy_set_header Host $host;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection "upgrade";
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;