diff --git a/README.md b/README.md
index 6fa988f..d292a07 100644
--- a/README.md
+++ b/README.md
@@ -48,3 +48,5 @@ _*make sure that your proxy work with right protocol_
 
 ## Troubleshooting
 All errors will appear directly in qBittorrent as searching result.
+* torrent tracker return 403 error:
+  - some sites, sometimes, enable protection like CloudFlare, that required JavaScript. Vanilla Python has no implementation of JavaScript, that's mean search engin will be return 403 error.