diff --git a/build-rootfs.sh b/build-rootfs.sh
index d657f24..6ebf243 100755
--- a/build-rootfs.sh
+++ b/build-rootfs.sh
@@ -59,8 +59,8 @@ while read name; do
     fi
 done < busybox.symlinks
 
-tar -c -C overlay . \
-    | tar -x --keep-newer-files -C /mnt/gentoo
+tar -c -C overlay --owner=root --group=root . \
+    | tar -x -C /mnt/gentoo
 
 cp -uv /usr/${target}/usr/bin/grub-editenv /mnt/gentoo/usr/bin/