diff --git a/sabnzbd/newzbin.py b/sabnzbd/newzbin.py
index 7ea3c4d..0c8c0c4 100644
--- a/sabnzbd/newzbin.py
+++ b/sabnzbd/newzbin.py
@@ -274,6 +274,9 @@ class Bookmarks(object):
     @synchronized(BOOK_LOCK)
     def run(self, delete=None):
 
+        if not (cfg.newzbin_bookmarks() and cfg.newzbin_username() and cfg.newzbin_password()):
+            return
+
         headers = { 'User-Agent': 'SABnzbd+/%s' % sabnzbd.__version__, }
 
         # Connect to Newzbin