diff --git a/puppet/services/barbican-api.yaml b/puppet/services/barbican-api.yaml
index 74daa24630..b4eff52716 100644
--- a/puppet/services/barbican-api.yaml
+++ b/puppet/services/barbican-api.yaml
@@ -177,7 +177,7 @@ outputs:
           nova::compute::barbican_auth_endpoint:
             get_param: [EndpointMap, KeystoneInternal, uri_no_suffix]
         cinder_api:
-          cinder::api::keymgr_api_class: >
+          cinder::api::keymgr_backend: >
             castellan.key_manager.barbican_key_manager.BarbicanKeyManager
           cinder::api::keymgr_encryption_api_url:
             get_param: [EndpointMap, BarbicanInternal, uri]