diff --git a/static/js/feature_flags.js b/static/js/feature_flags.js
index 30520ef5ad..792311ac7b 100644
--- a/static/js/feature_flags.js
+++ b/static/js/feature_flags.js
@@ -41,7 +41,7 @@ var zulip_mit_emails = [];
 
 var is_zulip_mit_user = _.contains(zulip_mit_emails, page_params.email);
 
-exports.muting = page_params.staging || is_zulip_mit_user || iceland || is_customer4;
+exports.muting = true;
 
 exports.left_side_userlist = page_params.staging ||
   _.contains(['customer7.invalid'], page_params.domain);