diff --git a/zaza/openstack/utilities/openstack.py b/zaza/openstack/utilities/openstack.py
index 46c9ed276..67bbda2dd 100644
--- a/zaza/openstack/utilities/openstack.py
+++ b/zaza/openstack/utilities/openstack.py
@@ -1042,6 +1042,7 @@ 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)