diff --git a/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc b/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc
index faba73fe..5afe49b6 100644
--- a/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc
+++ b/meta/recipes-core/isar-bootstrap/isar-bootstrap.inc
@@ -291,11 +291,15 @@ do_bootstrap() {
     sudo rm -rf --one-file-system "${ROOTFSDIR}"
     deb_dl_dir_import "${ROOTFSDIR}" "${BOOTSTRAP_BASE_DISTRO}-${BASE_DISTRO_CODENAME}"
 
+    if [ "${BOOTSTRAP_FOR_HOST}" = "0" ]; then
+        test -z "${HOST_ARCH}" -o -z "${ROOTFS_ARCH}" -o -z "${DISTRO_ARCH}" && \
+            bbwarn "*** ATTENTION *** BOOTSTRAP_FOR_HOST=0, DEBOOTSTRAP=${DEBOOTSTRAP},"\
+                "HOST_ARCH=${HOST_ARCH}, ROOTFS_ARCH=${ROOTFS_ARCH}, DISTRO_ARCH=${DISTRO_ARCH}."
+        export arch_param="--arch=${DISTRO_ARCH}"
+    fi
+
     sudo -E -s <<'EOSUDO'
         set -e
-        if [ "${BOOTSTRAP_FOR_HOST}" = "0" ]; then
-            arch_param="--arch=${DISTRO_ARCH}"
-        fi
         ${DEBOOTSTRAP} $debootstrap_args \
                        $arch_param \
                        ${@get_distro_components_argument(d)} \