diff --git a/scripts/gnt-node b/scripts/gnt-node
index 3303d7ad9c1b059300f9ce07ea6d5f7307aff116..795d5b5ae0e7a2b5d62febb9e283885c224a85e4 100755
--- a/scripts/gnt-node
+++ b/scripts/gnt-node
@@ -541,7 +541,7 @@ commands = {
                           choices=('yes', 'no'), default=None,
                           help="Set the drained flag on the node"),
               ],
-             "<instance>", "Alters the parameters of an instance"),
+             "<node_name>", "Alters the parameters of an instance"),
   'remove': (RemoveNode, ARGS_ONE, [DEBUG_OPT],
              "<node_name>", "Removes a node from the cluster"),
   'volumes': (ListVolumes, ARGS_ANY,