diff --git a/app.py b/app.py
index 055a97a..417a311 100644
--- a/app.py
+++ b/app.py
@@ -331,7 +331,7 @@ def proxy(video_id):
         return Response("Video not found", status=404)
 
     reason_code = params.get('reasonCode')
-    if ('' or reason_code).upper() in ['HIDDEN_VIDEO', 'ADMINISTRATOR_DELETE_VIDEO']:
+    if (reason_code or '').upper() in ['HIDDEN_VIDEO', 'ADMINISTRATOR_DELETE_VIDEO']:
         logger.warning(f"{video_id}: Video is hidden or deleted ({reason_code}) - returning 404")
         return Response("Video not found", status=404)