diff --git a/docker/post.j2.yaml b/docker/post.j2.yaml
index 865c74e523..dfa8ac2eff 100644
--- a/docker/post.j2.yaml
+++ b/docker/post.j2.yaml
@@ -8,7 +8,6 @@ parameters:
   servers:
     type: json
     description: Mapping of Role name e.g Controller to a list of servers
-
   role_data:
     type: json
     description: Mapping of Role name e.g Controller to the per-role data
@@ -19,6 +18,11 @@ parameters:
     description: >
       Setting this to a unique value will re-run any deployment tasks which
       perform configuration on a Heat stack-update.
+  EndpointMap:
+    default: {}
+    description: Mapping of service endpoint -> protocol. Typically set
+                 via parameter_defaults in the resource registry.
+    type: json
 
 resources: