W classes/Customer.php
            'lastname' =>                    array('type' => self::TYPE_STRING, 'validate' => 'isCustomerName', 'required' => true, 'size' => 32),
            'firstname' =>                    array('type' => self::TYPE_STRING, 'validate' => 'isCustomerName', 'required' => true, 'size' => 32),
           ost' => false),

W override/classes utworzyłem plik o nazwie Validate.php
<?php
class Validate extends ValidateCore
{
    public static function isCustomerName($name)
    {
        if (preg_match(Tools::cleanNonUnicodeSupport('/www|http/ui'), $name)) {
           return false;
        }

        return preg_match(Tools::cleanNonUnicodeSupport('/^[^0-9!\[\]<>,;?=+()@#"°{}_$%:\/\\\*\^]*$/u'), $name);
    }
}