diff --git a/export-noobs/prerun.sh b/export-noobs/prerun.sh
index 61a26d5..dafe654 100755
--- a/export-noobs/prerun.sh
+++ b/export-noobs/prerun.sh
@@ -33,8 +33,8 @@ mount $BOOT_DEV ${STAGE_WORK_DIR}/rootfs/boot
 
 ln -sv "/lib/systemd/system/apply_noobs_os_config.service" "$ROOTFS_DIR/etc/systemd/system/multi-user.target.wants/apply_noobs_os_config.service"
 
-bsdtar --format gnutar --use-compress-program pxz -C ${STAGE_WORK_DIR}/rootfs/boot -cpf ${NOOBS_DIR}/boot.tar.xz .
+bsdtar --numeric-owner --format gnutar --use-compress-program pxz -C ${STAGE_WORK_DIR}/rootfs/boot -cpf ${NOOBS_DIR}/boot.tar.xz .
 umount ${STAGE_WORK_DIR}/rootfs/boot
-bsdtar --format gnutar --use-compress-program pxz -C ${STAGE_WORK_DIR}/rootfs --one-file-system -cpf ${NOOBS_DIR}/root.tar.xz .
+bsdtar --numeric-owner --format gnutar --use-compress-program pxz -C ${STAGE_WORK_DIR}/rootfs --one-file-system -cpf ${NOOBS_DIR}/root.tar.xz .
 
 unmount_image ${IMG_FILE}