diff --git a/machines/orbi/nginx-ingolf-wagner-de.nix b/machines/orbi/nginx-ingolf-wagner-de.nix
index eb16f86..212bd7f 100644
--- a/machines/orbi/nginx-ingolf-wagner-de.nix
+++ b/machines/orbi/nginx-ingolf-wagner-de.nix
@@ -126,6 +126,7 @@ in
           "/" = {
             root = "/srv/www/travel";
             extraConfig = ''
+              etag on;
               if (-d $request_filename) {
                 rewrite [^/]$ $scheme://$http_host$request_uri/ permanent;
               }