diff --git a/magnumclient/osc/v1/clusters.py b/magnumclient/osc/v1/clusters.py
index 6fec3e76e25e9587d6addd280f7a506efddc764a..ace6f34bb506daa47b8b9096a7540d02de110e5e 100644
--- a/magnumclient/osc/v1/clusters.py
+++ b/magnumclient/osc/v1/clusters.py
@@ -161,7 +161,7 @@ class CreateCluster(command.Command):
             dest='master_lb_enabled',
             action='append_const',
             default=[],
-            const=False,
+            const=True,
             help=_('Enable master LB creation on the new cluster'))
         parser.add_argument(
             '--master-lb-disabled',