diff --git a/magnumclient/v1/clusters.py b/magnumclient/v1/clusters.py
index 163f30bca79a94072225f33f0c8e52f17b64b8e1..df5ebfeea872f89f4b5600d432ab0a662c0f0d28 100644
--- a/magnumclient/v1/clusters.py
+++ b/magnumclient/v1/clusters.py
@@ -21,6 +21,7 @@ CREATION_ATTRIBUTES.append('create_timeout')
 CREATION_ATTRIBUTES.append('keypair')
 CREATION_ATTRIBUTES.append('docker_volume_size')
 CREATION_ATTRIBUTES.append('labels')
+CREATION_ATTRIBUTES.append('master_flavor_id')
 
 
 class Cluster(baseunit.BaseTemplate):