WARNING: could not open modules.builtin: No such file or directo

Shahryar
Hi everyone
I'm using kernel from FriendlyARM and busybox and this tutorial:
http://wiki.iface.ch/index.php/Basic_rootfs_for_Mini2440

I successfully built kernel and rootfs but when I want to install modules I
always get this error:

WARNING: could not open /lib/modules/2.6.32.2-FriendlyARM/modules.builtin:
No such file or directory

Does anyone know how to fix it?
thanks and sorry because of my english