pre_get_posts example

gistfile1.php

<?php
function mywfx_archive_order_by_title($query) {
	if ( !is_admin() && $query->is_main_query() ) {
       if ( is_post_type_archive( ‘kitty’ ) {
           $query->set( 'orderby', 'title' );
           $query->set( 'order', 'ASC' );
       }
		return $query;
	}
}
add_action( 'pre_get_posts', 'mywfx_archive_order_by_title', 1 );
?>