diff --git a/engines/wikijs.py b/engines/wikijs.py
index 43947ed..12f53fe 100644
--- a/engines/wikijs.py
+++ b/engines/wikijs.py
@@ -98,7 +98,7 @@ def request(query, params):
     if paging and search_url.find('{pageno}') >= 0:
         fp['pageno'] = (params['pageno'] - 1) * page_size + first_page_num
 
-    header['Authorization'] = 'Bearer %s' % search_token
+    headers['Authorization'] = 'Bearer %s' % search_token
     params['cookies'].update(cookies)
     params['headers'].update(headers)