diff --git a/static/js/feature_flags.js b/static/js/feature_flags.js
index 72f8489fb1..a2aca9ec90 100644
--- a/static/js/feature_flags.js
+++ b/static/js/feature_flags.js
@@ -23,7 +23,7 @@ exports.mandatory_topics = _.contains([
 exports.collapsible = false;
 
 exports.propagate_topic_edits = page_params.staging ||
-  _.contains(['customer7.invalid'], page_params.domain);
+  _.contains(['customer7.invalid', 'customer9.invalid'], page_params.domain);
 
 var customer4_realms = [
   'customer4.invalid',