// Display link itself.
$activitylink = html_writer::empty_tag('img', array('src' => $mod->get_icon_url(),
- 'class' => 'iconlarge activityicon', 'alt' => ' ', 'role' => 'presentation')) .
+ 'class' => 'iconlarge activityicon', 'alt' => '', 'role' => 'presentation', 'aria-hidden' => 'true')) .
html_writer::tag('span', $instancename . $altname, array('class' => 'instancename'));
if ($mod->uservisible) {
$output .= html_writer::link($url, $activitylink, array('class' => $linkclasses, 'onclick' => $onclick));