diff --git a/app/ytdl.py b/app/ytdl.py
index ddf7386..8e32292 100644
--- a/app/ytdl.py
+++ b/app/ytdl.py
@@ -29,7 +29,7 @@ class DownloadQueueNotifier:
         raise NotImplementedError
 
 class DownloadInfo:
-    def __init__(self, id, title, url, quality, format, folder, custom_name_prefix, error=None):
+    def __init__(self, id, title, url, quality, format, folder, custom_name_prefix, error):
         self.id = id if len(custom_name_prefix) == 0 else f'{custom_name_prefix}.{id}'
         self.title = title if len(custom_name_prefix) == 0 else f'{custom_name_prefix}.{title}'
         self.url = url