Strange behaviour for conflic file

[jupiter]

Hi,

I built my own RPM packages which contain top menu hce.menu for CentOS
6.5, but I am baffled by following conflict file error:

$ sudo yum install hce_graphics

Transaction Check Error:
  file /etc/xdg/menus/applications-merged/hce.menu from install of
hce_graphics-1.3.18-4.0.7.x86_64 conflicts with file from package
hce_g1-4.1-4.0.8.x86_64

Both hce.menu file are exactly identical:

$ md5sum /usr/local/hce_graphics/menu/hce.menu
bb4a1d5b7fa3dc0da292239cbedf096d

$ md5sum /usr/local/hce_g1/menu/hce.menu
bb4a1d5b7fa3dc0da292239cbedf096d

How does the yum check the conflict file?

Appreciate your advice.

Thank you.

Kind regards,

- jupi