diff --git a/index.js b/index.js
index 0523485..6e63e28 100644
--- a/index.js
+++ b/index.js
@@ -27,8 +27,12 @@ module.exports = function main (
   for (const f of fs.readdirSync (modulefolder)) {
     const regex = /(?<method>.*?)-(?<url>.*?)\.js/u;
     const { groups } = regex.exec (f);
-    if ('undefined' !== typeof subdir)
+
+    if ('undefined' === typeof subdir)
+      groups.url = `/${groups.url}/`;
+    else
       groups.url = `/${subdir}/${groups.url}/`;
+
     groups.url = groups.url
       .replace (/^\/[^/]*\/root/iu, '/')
       .replace (/\./gu, '/')