I'm trying to build kernel 2.6.33-rc8 according to the documentation here: https://wiki.ubuntu.com/KernelTeam/GitKernelBuild , but at a late stage in the compilation, I'm encountering the following error:

/usr/bin/make -f ./debian/rules 	debian/stamp/binary/pre-linux-image-2.6.33-rc8-custom
make[1]: Entering directory `/root/src/linux-2.6.33-rc8'
====== making target debian/stamp/install/linux-image-2.6.33-rc8-custom [new prereqs: ]======
This is kernel package version 11.015.
echo "The UTS Release version in include/linux/version.h"; echo "	   \"\" "; echo "does not match current version:"; echo "	   \"2.6.33-rc8-custom\" "; echo "Please correct this."; exit 2
The UTS Release version in include/linux/version.h
does not match current version:
Please correct this.
what am I doing wrong?