80c80
<         $element[$key]['#tab_name'] = form_clean_id('tabs-' . strtolower(preg_replace('/[^a-zA-Z0-9\ ]+/ ', ' ', $element[$key]['#title'])));
---
>         $element[$key]['#tab_name'] = form_clean_id('tabs-' . strtolower($element[$key]['#title']));