diff --git a/src/reactive/aodh_handlers.py b/src/reactive/aodh_handlers.py
index 0c62aa1..330ab3b 100644
--- a/src/reactive/aodh_handlers.py
+++ b/src/reactive/aodh_handlers.py
@@ -22,6 +22,7 @@ import charm.openstack.aodh as aodh
 
 charm.use_defaults(
     'certificates.available',
+    'cluster.available',
 )