Missing Controller

Error: Certificato.pdfController could not be found.

Error: Create the class Certificato.pdfController below in file: app/controllers/certificato.pdf_controller.php

<?php
class Certificato.pdfController extends AppController {

	var $name = 'Certificato.pdf';
}
?>

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