[Fedora-packaging] Requires: kmod(some_module)

[lejeczek]

hi everybody

newbie question on spec file subject, file that contains:

Requires: kmod(some_module)

it rpmbuilds fine but later when attempt to install the 
package yum fails with:
...
--> Finished Dependency Resolution
Error: Package: some_package
            Requires: kmod(some_module.ko)
...
And module in question naturally is installed.

I'm missing something silly, what is it?
many thanks
P.