diff --git a/engines/nibl.py b/engines/nibl.py
index 953fcb8..ad86578 100644
--- a/engines/nibl.py
+++ b/engines/nibl.py
@@ -2,6 +2,8 @@ from lxml import html
 from searx.engines.xpath import extract_text
 from searx.url_utils import quote
 
+categories = ['files']
+
 url = 'https://nibl.co.uk/bots.php'
 search_url = url + '?search={query}'