diff --git a/beadm b/beadm
index 41cd5b8..3ef3eb5 100755
--- a/beadm
+++ b/beadm
@@ -43,6 +43,7 @@ __usage() {
   echo "  ${NAME} destroy [-F] beName"
   echo "  ${NAME} destroy [-F] beName@snapshot"
   echo "  ${NAME} list [-a]"
+  echo "  ${NAME} list [-D]"
   echo "  ${NAME} mount beName [mountpoint]"
   echo "  ${NAME} umount [-f] beName"
   echo "  ${NAME} unmount [-f] beName"