diff --git a/environments/services/haproxy-public-tls-certmonger.yaml b/environments/services/haproxy-public-tls-certmonger.yaml
index 022f8474c9..f87615e11c 100644
--- a/environments/services/haproxy-public-tls-certmonger.yaml
+++ b/environments/services/haproxy-public-tls-certmonger.yaml
@@ -1,5 +1,7 @@
 # A Heat environment file which can be used to enable a
 # a TLS for HAProxy via certmonger
 resource_registry:
-  PublicSSLCertificateAutogenerated: true
   OS::TripleO::Services::HAProxyPublicTLS: ../../puppet/services/haproxy-public-tls-certmonger.yaml
+
+parameter_defaults:
+  PublicSSLCertificateAutogenerated: true