diff --git a/glanceclient/v2/image_members.py b/glanceclient/v2/image_members.py
index cb6a829c..5d07b9b5 100644
--- a/glanceclient/v2/image_members.py
+++ b/glanceclient/v2/image_members.py
@@ -19,6 +19,9 @@ from glanceclient.common import utils
 from glanceclient.v2 import schemas
 
 
+MEMBER_STATUS_VALUES = ('accepted', 'rejected', 'pending')
+
+
 class Controller(object):
     def __init__(self, http_client, schema_client):
         self.http_client = http_client
diff --git a/glanceclient/v2/shell.py b/glanceclient/v2/shell.py
index 26289198..31d02532 100644
--- a/glanceclient/v2/shell.py
+++ b/glanceclient/v2/shell.py
@@ -16,6 +16,7 @@
 from glanceclient.common import progressbar
 from glanceclient.common import utils
 from glanceclient import exc
+from glanceclient.v2.image_members import MEMBER_STATUS_VALUES
 from glanceclient.v2 import images
 from glanceclient.v2 import tasks
 import json
@@ -203,7 +204,10 @@ def do_member_delete(gc, args):
 @utils.arg('member_id', metavar='<MEMBER_ID>',
            help='Tenant to update.')
 @utils.arg('member_status', metavar='<MEMBER_STATUS>',
-           help='Updated status of member.')
+           choices=MEMBER_STATUS_VALUES,
+           help='Updated status of member.'
+                ' Valid Values: %s' %
+                ', '.join(str(val) for val in MEMBER_STATUS_VALUES))
 def do_member_update(gc, args):
     """Update the status of a member for a given image."""
     if not (args.image_id and args.member_id and args.member_status):