diff --git a/docker/nginx.prod.conf b/docker/nginx.prod.conf
index d64777a..df04e6b 100644
--- a/docker/nginx.prod.conf
+++ b/docker/nginx.prod.conf
@@ -54,7 +54,7 @@ http {
         # Proxy requests to the Django app running in gunicorn
         location / {
             proxy_pass http://django_app;
-            proxy_set_header Host $http_host;
+            proxy_set_header Host mapdb2.cncnet.org;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             proxy_set_header X-Forwarded-Proto $scheme;