--- user.py	2017-02-28 15:04:57.000000000 -0500
+++ user-new.py	2017-05-12 11:26:12.594562641 -0400
@@ -331,7 +331,7 @@
             if None in (uid_number, login_shell, unix_home, gid_number):
                 raise CommandError('Missing parameters. To enable NIS features, '
                                    'the following options have to be given: '
-                                   '--nis-domain=, --uidNumber=, --login-shell='
+                                   '--nis-domain=, --uid-number=, --login-shell='
                                    ', --unix-home=, --gid-number= Operation '
                                    'cancelled.')