diff --git a/route/api/youtube/index.js b/route/api/youtube/index.js
index b4fd8d3..a71047e 100644
--- a/route/api/youtube/index.js
+++ b/route/api/youtube/index.js
@@ -51,7 +51,7 @@ r.get('/download', async c => {
 
   const fileInfo = store.get(file)
   let fn = file
-  if (fileInfo !== null && 'title' in fileInfo) fn = fileInfo.title
+  if (fileInfo !== null && 'title' in fileInfo) fn = `${fileInfo.title}.mp3`
 
   const rs = fs.createReadStream(fp)
   c.set('Content-disposition', `attachment; filename="${encodeURIComponent(fn)}"; filename*="utf8''${encodeURIComponent(fn)}";`)