diff --git a/searx/engines/derpibooru.py b/searx/engines/derpibooru.py
index 70a19ede5..6a54a3f7b 100644
--- a/searx/engines/derpibooru.py
+++ b/searx/engines/derpibooru.py
@@ -25,9 +25,9 @@ paging = True
 filter_id = 100073
 
 
-
 def request(query, params):
-    params['url'] = search_url + urlencode({'q': query, 'filter_id': filter_id, 'page': params['pageno'], 'per_page': page_size})
+    params['url'] = search_url + urlencode(
+        {'q': query, 'filter_id': filter_id, 'page': params['pageno'], 'per_page': page_size})
     logger.debug("query_url --> %s", params['url'])
     return params