diff --git a/unit_tests/utilities/test_zaza_utilities_openstack.py b/unit_tests/utilities/test_zaza_utilities_openstack.py
index 4576564..7e9a57d 100644
--- a/unit_tests/utilities/test_zaza_utilities_openstack.py
+++ b/unit_tests/utilities/test_zaza_utilities_openstack.py
@@ -1108,7 +1108,8 @@ class TestOpenStackUtils(ut_utils.BaseTestCase):
         self.get_relation_from_unit.assert_called_once_with(
             'swift-proxy',
             'keystone',
-            'identity-service')
+            'identity-service',
+            model_name=None)
         self.get_keystone_session.assert_called_once_with(
             {
                 'OS_AUTH_URL': 'http://10.5.0.61:5000/v3',
@@ -1155,7 +1156,8 @@ class TestOpenStackUtils(ut_utils.BaseTestCase):
         self.get_relation_from_unit.assert_called_once_with(
             'swift-proxy',
             'keystone',
-            'identity-service')
+            'identity-service',
+            model_name=None)
         self.get_keystone_session.assert_called_once_with(
             {
                 'OS_AUTH_URL': 'http://10.5.0.36:5000/v2.0',
diff --git a/zaza/openstack/utilities/openstack.py b/zaza/openstack/utilities/openstack.py
index cb1b6fd..1776296 100644
--- a/zaza/openstack/utilities/openstack.py
+++ b/zaza/openstack/utilities/openstack.py
@@ -2450,7 +2450,8 @@ def get_keystone_session_from_relation(client_app,
                                        identity_app='keystone',
                                        relation_name='identity-service',
                                        scope='PROJECT',
-                                       verify=None):
+                                       verify=None,
+                                       model_name=None):
     """Extract credentials information from a relation & return a session.
 
     :param client_app: Name of application receiving credentials.
@@ -2466,16 +2467,19 @@ def get_keystone_session_from_relation(client_app,
                        False - do not verify,
                        None  - defer to requests library to find certs,
                        str   - path to a CA cert bundle)
+    :param model_name: Name of model to query.
+    :type model_name: str
     :returns: Keystone session object
     :rtype: keystoneauth1.session.Session object
     """
     relation = juju_utils.get_relation_from_unit(
         client_app,
         identity_app,
-        relation_name)
+        relation_name,
+        model_name=model_name)
 
     api_version = int(relation.get('api_version', 2))
-    creds = get_overcloud_auth()
+    creds = get_overcloud_auth(model_name=model_name)
     creds['OS_USERNAME'] = relation['service_username']
     creds['OS_PASSWORD'] = relation['service_password']
     creds['OS_PROJECT_NAME'] = relation['service_tenant']