Missing Method in ArtigosController

Error: The action favicon.ico is not defined in controller ArtigosController

Error: Create ArtigosController::favicon.ico() in file: app/controllers/artigos_controller.php.

<?php
class ArtigosController extends AppController {

	var $name = 'Artigos';


	function favicon.ico() {

	}

}
?>

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