diff --git a/do-kernel-bump.sh b/do-kernel-bump.sh
index e7b4426..4ef7120 100755
--- a/do-kernel-bump.sh
+++ b/do-kernel-bump.sh
@@ -1,11 +1,12 @@
 #!/bin/sh
-if [ -z "$2" ]; then
-	echo do-kernel-bump.sh OLDVER NEWVER
+if [ -z "$3" ]; then
+	echo do-kernel-bump.sh OLDVER NEWVER NAS_PATCHES_VER
 	exit
 fi
 
 OLD=$1
 NEW=$2
+VER=$3
 PACKAGES="
 	sys-kernel/buffalo_ls_chl-sources sys-kernel/linux-buffalo_ls_chl \
 	sys-kernel/buffalo_ls_chl2-sources sys-kernel/linux-buffalo_ls_chl2 \
@@ -20,7 +21,7 @@ PACKAGES="
 
 for package in ${PACKAGES}; do
 	name=$(echo ${package} | cut -d/ -f2)
-	cp ${package}/${name}-${OLD}.ebuild ${package}/${name}-${NEW}.ebuild
+	sed -e "s:^K_NASPATCHES_VER=.*:K_NASPATCHES_VER=\"${VER}\":" ${package}/${name}-${OLD}.ebuild > ${package}/${name}-${NEW}.ebuild
 	git add ${package}/${name}-${NEW}.ebuild
 	ebuild ${package}/${name}-${NEW}.ebuild manifest
 done