exo-helper-2 or exo-preferred-applications?

Hi, it's just a minor issue, but why if I run this comand exo-preferred-applications --help it says exo-helper-2 in the Usage section? Is it a bug or is it normal?

[emanuele@localhost ~]$ exo-preferred-applications --help
Usage:
  exo-helper-2 [OPTION…]

Help Options:
  -h, --help                        Show help options
  --help-all                        Show all help options
  --help-gtk                        Show GTK Options

Application Options:
  -V, --version                     Print version information and exit
  -c, --configure                   Open the Preferred Applications
configuration dialogue
  -s, --socket-id=SOCKET ID         Settings manager socket
  -l, --launch=TYPE [PARAMETER]     Launch the default helper of TYPE with the optional PARAMETER, where TYPE is one of the following values.
  -q, --query=TYPE [PARAMETER]      Query the default helper of TYPE, where TYPE is one of the following values.
  --display=DISPLAY                 X display to use

The following TYPEs are supported for the --launch and --query commands:

  WebBrowser       - The preferred Web Browser.
  MailReader       - The preferred Mail Reader.
  FileManager      - The preferred File Manager.
  TerminalEmulator - The preferred Terminal Emulator.