Genesis force layout of parent page Blog

/** Genesis force layout of parent page
MijnPress.nl
 */
add_filter( 'genesis_pre_get_option_site_layout', 'mp_child_get_parent_layout' );
function mp_child_get_parent_layout( $opt ) {
	global $post;
	if ( is_page() && $post->post_parent > 0) {
		$opt_new = get_post_meta($post->post_parent, '_genesis_layout', true);
		if($opt_new) {
			$opt = $opt_new;
		}
	}
	return $opt;
}