X_Y on "polylang for custom post types stops working in 1.4dev17"

I used it as described in the link above, in functions.php

add_filter('pll_get_post_types', 'my_pll_get_post_types');
function my_pll_get_post_types($types) {
	return array_merge($types, array('my-cpt' => 'my-cpt'));
}

Where my-cpt is my custom post type.