diff --git a/conf/nginx-proxy.conf b/conf/nginx-proxy.conf
index 8b57859..6d3a1ee 100644
--- a/conf/nginx-proxy.conf
+++ b/conf/nginx-proxy.conf
@@ -6,6 +6,7 @@ location YNH_LOCATION {
   proxy_set_header  X-Forwarded-Proto $scheme;
   proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header  X-Forwarded-Host $server_name;
+  proxy_set_header  X-Forwarded-Port $server_port;
   
   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;