"Detailed Question" shows up in ALL my CCK types

The Detailed Question field is showing up in ALL my content types (I see it when I go to any CCK type > Manage Fields). I don't think this would be by design, as Question and Answer do not do the same thing. First time install of the FAQ module. Is this a bug?

Is there a reasonably easy way to prevent this? I see this in faq.module:
function faq_content_extra_fields($type_name) {
$extras = array();
$extras['detailed_question'] = array(
'label' => t('Detailed question'),
'description' => t('FAQ detailed question field'),
'weight' => 10,
);
return $extras;
}
which makes me think it should have only applied to the FAQ $type_name. Didn't find where this is called from though.