Почему выдает ошибку warning: htmlspecialchars() expects parameter 2 to be int?

Warning: Use of undefined constant ENT_QWUOTES - assumed 'ENT_QWUOTES' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\kinomonster\index.php on line 15

Warning: htmlspecialchars() expects parameter 2 to be int, string given in C:\xampp\htdocs\kinomonster\index.php on line 15

if(isset ($_POST['name'])) {
     	$nameFilter = htmlspecialchars($_POST['name'], ENT_QWUOTES, "UTF-8");
     	echo "Мое имя, ".$nameFilter;
        //print_r($_POST); 
}