diff --git a/zaza/openstack/utilities/openstack.py b/zaza/openstack/utilities/openstack.py
index 3291e58..5c8719b 100644
--- a/zaza/openstack/utilities/openstack.py
+++ b/zaza/openstack/utilities/openstack.py
@@ -1450,7 +1450,7 @@ def get_current_os_release_pair(application='keystone'):
     :raises: exceptions.OSVersionNotFound
     """
     try:
-        machine = juju_utils.get_machines_for_application(application)
+        machine = list(juju_utils.get_machines_for_application(application))[0]
     except KeyError:
         raise exceptions.ApplicationNotFound(application)