diff --git a/kabot/kabot/kabot.py b/kabot/kabot/kabot.py
index 0e28ef0..c87ef0a 100644
--- a/kabot/kabot/kabot.py
+++ b/kabot/kabot/kabot.py
@@ -318,7 +318,9 @@ class Mybot(commands.Cog):
         with youtube_dl.YoutubeDL(ydl_opts) as ydl:
             ydl.download([url])
         info_dict = ydl.extract_info(url, download=False)
-        out_file = ydl.prepare_filename(info_dict).replace(".webm", ".mp3")
+        out_file = ydl.prepare_filename(info_dict)
+        extension = out_file.split('.')[-1]
+        out_file = out_file.replace(extension, 'mp3')
         self.sounds.append((out_file, ctx))
 
     @commands.command()