Ovidiu on "[Plugin: Wordfence Security] PHP Notice?"

Found this while debugging:

Notice Undefined index: _wfsf on line 448 in file /var/www/clients/clientx/webx/web/wp-content/plugins/wordfence/lib/wordfenceClass.php

Fixable?
Doesn't look like anything major, just wanted to mention it...

https://wordpress.org/plugins/wordfence/