diff --git a/barbican/server/cluster.yml b/barbican/server/cluster.yml
index 110ff29..558f08b 100644
--- a/barbican/server/cluster.yml
+++ b/barbican/server/cluster.yml
@@ -36,6 +36,8 @@
           enabled: ${_param:barbican_memcache_security_enabled}
           strategy: ${_param:openstack_memcache_security_strategy}
           secret_key: ${_param:barbican_memcache_secret_key}
+      # Keystone notification topic. Should be overridden from cluster level (see PROD-32645)
+      ks_notifications_topic: notifications
   linux:
     system:
       package:
diff --git a/keystone/server/notification/messagingv2.yml b/keystone/server/notification/messagingv2.yml
index 2cc7e64..0bddb91 100644
--- a/keystone/server/notification/messagingv2.yml
+++ b/keystone/server/notification/messagingv2.yml
@@ -1,6 +1,8 @@
 parameters:
+  _param:
+    keystone_notification_topics: "${_param:openstack_notification_topics}"
   keystone:
     server:
       notification:
         driver: messagingv2
-        topics: "${_param:openstack_notification_topics}"
+        topics: "${_param:keystone_notification_topics}"