diff --git a/nixos/modules/services/mail/mailman.nix b/nixos/modules/services/mail/mailman.nix
index a5b17be349ce..84b0fbc5f6ec 100644
--- a/nixos/modules/services/mail/mailman.nix
+++ b/nixos/modules/services/mail/mailman.nix
@@ -165,7 +165,7 @@ in {
 
         baseUrl = mkOption {
           type = types.str;
-          default = "http://localhost/hyperkitty/";
+          default = "http://localhost:18507/archives/";
           description = ''
             Where can Mailman connect to Hyperkitty's internal API, preferably on
             localhost?
@@ -391,6 +391,7 @@ in {
           plugins = ["python3"];
           home = pythonEnv;
           module = "mailman_web.wsgi";
+          http = "127.0.0.1:18507";
         };
         uwsgiConfigFile = pkgs.writeText "uwsgi-mailman.json" (builtins.toJSON uwsgiConfig);
       in {