A -debuginfo package failing to "exist"

[Nikolai]

I am packaging a game that is compiled without symbols, and when RPM
is creating the binary package I get the error "Não consegui abrir o
ficheiro do %files
/usr/src/redhat/BUILD/widelands-20060801/debugfiles.list: Arquivo ou
diretório não encontrado",  a.k.a File Not Found in english. What can
I do to prevent the generation of the "-debuginfo" package?