$(if $(findstring source, $(build-type)), \
--unsigned-source --compression=$(KDEB_SOURCE_COMPRESS)) \
$(if $(findstring binary, $(build-type)), \
- -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch), \
+ --rules-file='$(MAKE) -f debian/rules' --jobs=1 -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch), \
--no-check-builddeps) \
$(DPKG_FLAGS))