diff -r b2fa3d89ed89 -r b96c41c6de4d server/serverctl.py
--- a/server/serverctl.py	Mon Jul 18 17:51:55 2011 +0200
+++ b/server/serverctl.py	Wed Jul 20 12:31:03 2011 +0200
@@ -567,6 +567,7 @@
     """
     name = 'reset-admin-pwd'
     arguments = '<instance>'
+    min_args = max_args = 1
     options = (
         ('password',
          {'short': 'p', 'type' : 'string', 'metavar' : '<new-password>',