diff --git a/config/site_settings.yml b/config/site_settings.yml
index 89468489a05..0f1e6036295 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -1185,6 +1185,7 @@ posting:
     client: true
     default: false
   enable_diffhtml_preview:
+    hidden: true
     default: false
     client: true
   enable_fast_edit: