Could not find source tarball busybox

Da habe ich mal wieder etc-update vergessen.
...
* Gentoo Linux Genkernel; Version 3.4.23
* Running with options: ramdisk

Could not find source tarball /var/cache/genkernel/src/busybox-1.18.1.tar.bz2. Please refetch.
gentoo # etc-update
Scanning Configuration files...
The following is the list of files which need updating, each
configuration file is followed by a list of possible replacement files.
1) /etc/genkernel.conf (1)