Something wrong with atlas-3.8.3-18.fc14.src.rpm

[Neal Becker]

0. F15 x86_64
1. yumdownloader --source atlas
2. rpmbuild -D 'enable_native_atlas 1' atlas.spec 
error: line 75: Bad Requireflags: qualifiers: Requires(posttans):	
chkconfig

How can it be that my system fails rpmbuild but fedora build is OK?