diff --git a/octavia_tempest_plugin/clients.py b/octavia_tempest_plugin/clients.py
index f85404c..f2a7767 100644
--- a/octavia_tempest_plugin/clients.py
+++ b/octavia_tempest_plugin/clients.py
@@ -52,7 +52,7 @@
         params.update({
             'auth_provider': self.auth_provider,
             'service': CONF.load_balancer.catalog_type,
-            'region': CONF.load_balancer.region,
+            'region': CONF.load_balancer.region or CONF.identity.region,
             'endpoint_type': CONF.load_balancer.endpoint_type,
             'build_interval': CONF.load_balancer.build_interval,
             'build_timeout': CONF.load_balancer.build_timeout