diff --git a/cinderclient/v2/shell.py b/cinderclient/v2/shell.py
index 9940d2495..6450bf2ed 100644
--- a/cinderclient/v2/shell.py
+++ b/cinderclient/v2/shell.py
@@ -1208,7 +1208,8 @@ def do_upload_to_image(cs, args):
 
 
 @utils.arg('volume', metavar='<volume>', help='ID of volume to migrate.')
-@utils.arg('host', metavar='<host>', help='Destination host.')
+@utils.arg('host', metavar='<host>', help='Destination host. Takes the form: '
+                                          'host@backend-name#pool')
 @utils.arg('--force-host-copy', metavar='<True|False>',
            choices=['True', 'False'],
            required=False,