diff --git a/lxc-apps/decidim/image.d/etc/nginx/nginx.conf b/lxc-apps/decidim/image.d/etc/nginx/nginx.conf
index 885f09f..ef555fa 100644
--- a/lxc-apps/decidim/image.d/etc/nginx/nginx.conf
+++ b/lxc-apps/decidim/image.d/etc/nginx/nginx.conf
@@ -26,6 +26,7 @@ http {
 		server_name localhost;
 
 		passenger_enabled on;
+		passenger_set_header Host $http_x_forwarded_host;
 		rails_env production;
 
 		root /srv/decidim-app/public;