Here is something I came up with to solve this exact problem. add_action(‘wp_list_categories’,’example_wp_list_categories’); function example_wp_list_categories($output) { global $post; foreach (get_categories() as $cat) { if (preg_match(“/\/category\/$cat->slug\//”, $output)) { $output = str_replace(‘/category/’ . $cat->slug . “https://wordpress.stackexchange.com/”, ‘/category/’ . $cat->slug . ‘/?post_type=” . $post->post_type, $output); } } return $output; } Regex isn”t a strong point of mine, so … Read more