diff --git a/usr/lib/archboot/installer/autoprepare.sh b/usr/lib/archboot/installer/autoprepare.sh
index bf730b8cb..8828d264b 100644
--- a/usr/lib/archboot/installer/autoprepare.sh
+++ b/usr/lib/archboot/installer/autoprepare.sh
@@ -174,7 +174,7 @@ _autoprepare() {
         # btrfs minimum size is around 120M
         [[ "${_DISK_SIZE}" -lt "7500" ]] && _ROOT_SIZE="$((_DISK_SIZE-350))"
         while [[ -z "${_ROOTDEV_SET}" ]]; do
-        _dialog --title " / in MiB " --inputbox "Minimum value is 2000. Disk space left: $((_DISK_SIZE-350))M" 12 55 "${_ROOT_SIZE}" 2>"${_ANSWER}" || return 1
+        _dialog --title " / in MiB " --inputbox "Minimum value is 2000. Disk space left: $((_DISK_SIZE-350))M" 9 55 "${_ROOT_SIZE}" 2>"${_ANSWER}" || return 1
         _ROOTDEV_SIZE=$(cat "${_ANSWER}")
             if [[ -z "${_ROOTDEV_SIZE}" || "${_ROOTDEV_SIZE}" == 0 || "${_ROOTDEV_SIZE}" -lt "2000" ]]; then
                 _dialog --title " ERROR " --infobox "You have entered an invalid size, please enter again." 3 60