bug with CSV encoding

There is a bug in the file controller.php, line 141:

where it says:
print(“\”” . mb_convert_encoding($str, $this->csv_encoding, ‘UTF-8’).”\”” . DELMITER);

it must be:
print(“\”” . mb_convert_encoding($str, $this->csv[‘encoding’], ‘UTF-8’).”\”” . DELMITER);