Include custom post type in WordPress search

gistfile1.php

add_filter( 'pre_get_posts', 'cpt_search' );
function cpt_search( $query ) {
    if ( $query->is_search )
    $query->set( 'post_type', array( 'post', 'page', 'movies', 'products', 'portfolio' ) );
    return $query;
};