ListDirectory i polskie znaki

public static List<String> ListDirectory(String path)
        {
            FtpWebRequest ftpWebRequest = (FtpWebRequest)WebRequest.Create(ConfigVar.FTP.Host + "/" + path);
            ftpWebRequest.EnableSsl = ConfigVar.FTP.EnableSsl;
            ftpWebRequest.Credentials = new NetworkCredential(ConfigVar.FTP.Login, ConfigVar.FTP.Password);
            ftpWebRequest.Method = WebRequestMethods.Ftp.ListDirectory;

            FtpWebResponse ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
            StreamReader streamReader = new StreamReader(ftpWebResponse.GetResponseStream(), Encoding.UTF8);

            List<String> listDirectory = new List<String>();

            String directory = streamReader.ReadLine();
            while (!String.IsNullOrEmpty(directory))
            {
                listDirectory.Add(directory);
                directory = streamReader.ReadLine();
            }
            streamReader.Close();

            return listDirectory;
        }