Indy.get Umlaute = ?

[Youuuu]

Delphi-Quellcode:

resp := TMemoryStream.Create;
      try
        with http do begin
          HandleRedirects := True;
          AllowCookies := False;
          RedirectMaximum := 10;
        end;
        http.Get( url, resp );
        resp.Position := 0; 
        slSource := TStringList.Create;
        try
          slSource.LoadFromStream(resp);
          source := slSource.Text;
        finally
          FreeAndNil(slSource);
        end;
        Result := source;
      finally
        resp.Free;
      end;

Wenn ich es wie oben per Stream lade, funktioniert es, anders jedoch nicht.