diff --git a/zaza/openstack/utilities/openstack.py b/zaza/openstack/utilities/openstack.py
index b306e67c5..2e61b2fb1 100644
--- a/zaza/openstack/utilities/openstack.py
+++ b/zaza/openstack/utilities/openstack.py
@@ -990,6 +990,7 @@ def create_additional_port_for_machines(novaclient, neutronclient, net_id,
                     "name": ext_port_name,
                     "network_id": net_id,
                     "port_security_enabled": False,
+                    "fixed_ips": [],
                 }
             }
             port = neutronclient.create_port(body=body_value)