diff --git a/web/nginx.conf b/web/nginx.conf
index 78c1179..3030fd4 100644
--- a/web/nginx.conf
+++ b/web/nginx.conf
@@ -27,7 +27,6 @@ http {
             # see https://github.com/sjmf/reverse-proxy-minimal-example
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             proxy_set_header X-Forwarded-Host $host;
-            proxy_set_header X-Forwarded-Port $port;
             proxy_set_header X-Forwarded-Proto $real_scheme;
 
             # see https://computingforgeeks.com/how-to-solve-nginx-warn-could-not-build-optimal-proxy-headers-hash-error/