Wrong icon displayed in content view

Course contents view is working much better in .81 for Joomla 1.5. Some visual problems though.

A certificate module displays the icon for "workshop".

Found in administrator/components/com_joomdle/helpers/system,php.

in function get_icon_url

case 'certificate':
$filename='workshop.png'; <---- should be 'certificate.png';

Thanks for the tip. I included the fix for next release.