Missing Controller

Error: Cennik.xlsController could not be found.

Error: Create the class Cennik.xlsController below in file: app/controllers/cennik.xls_controller.php

<?php
class Cennik.xlsController extends AppController {

	var $name = 'Cennik.xls';
}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_controller.ctp