diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index 3e0b5607..e8031b88 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -159,6 +159,7 @@ http {
         include snippets/security-headers.conf;
         add_header Cross-Origin-Resource-Policy "same-origin" always;
 
+        # https://trac.nginx.org/nginx/ticket/2012
         location / {
             return 301 https://grapheneos.org$request_uri;
         }