[Fedora-packaging] Directory ownership question

[Linux Linux]

Hi,
I package the gogui and pentobi game and i have fall on a directory ownership problem :


    %{_datadir}/thumbnailers/%{name}.thumbnailer
    or /usr/share/thumbnailers  is owned by nobody

    rpm -qf /usr/share/thumbnailers
    le fichier /usr/share/thumbnailers n'appartient à aucun paquetage (package owned
by nobody)


   Or thumbnailers directory has other programms

    ll /usr/share/thumbnailers
    total 28
    drwxr-xr-x.   2 root root  4096 23 nov.  11:31 .
    drwxr-xr-x. 307 root root 12288 12 déc.  14:26 ..
    -rw-r--r--.   1 root root   490 24 avril  2012 evince.thumbnailer
    -rw-r--r--.   1 root root  1304 13 nov.  15:35 gsf-office.thumbnailer
    -rw-r--r--.   1 root root  1731  4 juil.  2012 totem.thumbnailer

Is it normal that this /usr/share/thumbnailers is orphan ?
Need we let him orphan ?

Thanks in advance

-- Chris