Wordpress Redirect Post Type archive

extras.php

<?php
if ( ! function_exists( 'redirect_post_type_archive' ) ) {
    /**
     * Redirect to 404 if we are querying an post_type archive, we won't
     * @author Markus Schober
     */
    function redirect_post_type_archive() {
        global $wp_query, $post;

        if (is_post_type_archive(array('post-type'))) {
            $wp_query->set_404();
        }
    }

    add_action( 'template_redirect', 'redirect_post_type_archive' );
}