diff --git a/deployment/keystone/keystone-container-puppet.yaml b/deployment/keystone/keystone-container-puppet.yaml
index 448408b936..38d0b807ed 100644
--- a/deployment/keystone/keystone-container-puppet.yaml
+++ b/deployment/keystone/keystone-container-puppet.yaml
@@ -504,7 +504,7 @@ outputs:
             if:
             - tls_cache_enabled
             - keystone::cache_backend: 'dogpile.cache.pymemcache'
-            - {}
+            - keystone::cache_backend: 'dogpile.cache.memcached'
           -
             if:
             - keystone_federation_enabled