diff --git a/AUTHORS b/AUTHORS
index ac3ff114e..c1b5ca6d3 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -18,3 +18,4 @@ Matt Dietz <matt.dietz@rackspace.com>
 Sandy Walsh <sandy@darksecretsoftware.com>
 Gabriel Hurley <gabriel@strikeawe.com>
 Joe Heck <heckj@mac.com>
+Yaguang Tang <heut2008@gmail.com>
diff --git a/keystoneclient/v2_0/shell.py b/keystoneclient/v2_0/shell.py
index c13cb8ad4..d28382b6f 100755
--- a/keystoneclient/v2_0/shell.py
+++ b/keystoneclient/v2_0/shell.py
@@ -74,12 +74,12 @@ def do_user_update(kc, args):
         print 'Unable to update user: %s' % e
 
 
-@utils.arg('--pass', metavar='<password>', required=True,
+@utils.arg('--pass', metavar='<password>', dest='passwd', required=True,
            help='Desired new password')
 @utils.arg('id', metavar='<user-id>', help='User ID to update')
 def do_user_password_update(kc, args):
     """Update user password"""
-    kc.users.update_password(args.id, args.password)
+    kc.users.update_password(args.id, args.passwd)
 
 
 @utils.arg('id', metavar='<user-id>', help='User ID to delete')