diff --git a/make/linux-rpm-build.mk b/make/linux-rpm-build.mk
index e5f1c5ff..c33a700a 100644
--- a/make/linux-rpm-build.mk
+++ b/make/linux-rpm-build.mk
@@ -206,7 +206,7 @@ dist: clean
 	mv ../kernel.tar.gz .
 clean:
 	rm -rf $(KERNEL_BASE)-*
-	rm -rf install/* reiser.patch *~ *.done *.lxdone *.uldone *.patch *.rpm *.tar.gz *.tar \
+	rm -rf install/* reiser.patch *~ *.done *.lxdone *.uldone *.patch *.diff *.rpm *.tar.gz *.tar \
 		$(SCOPE_DRIVER_BASE)
 	rm -rf linux linux-$(KERNEL_VERSION) CURRENT_* pax_global_header
 	rm -f toplevel-makefile EXTRAVERSION COMPLETE_VERSION