Using custom function to include a metabox not working at all

In my custom post type declaration, I have the following metabox (as an example)

$meta_boxes[] = array(
        'id'       => 'description',
        'title' => 'Description',
        'pages'    => array('recipe'),
        'context'  => 'normal',
        'priority' => 'high',
        'include' => array(
            'custom' => 'my_include_field'
        ),
        'fields'   => array(
            array(
                'id'    => $prefix.'description',
                'type'  => 'wysiwyg',
            )
        )
    );

I wrote a function which tests against a setting, but just to try to make it do SOMETHING, I did this

function my_include_field($meta_box) {
    return false;
}

But the box is still showing up in the CPT single post edit.