diff --git a/format-zfs.sh b/format-zfs.sh
index e736d7c..cf5a688 100644
--- a/format-zfs.sh
+++ b/format-zfs.sh
@@ -1,4 +1,4 @@
-echo "copy the ID of disks to be used"
+echo "copy the ID of disks to be used with a space in between"
 ls /dev/disk/by-id
 read diskID