diff --git a/config/initializers/004-message_bus.rb b/config/initializers/004-message_bus.rb
index f560ad2a320..70c7c786328 100644
--- a/config/initializers/004-message_bus.rb
+++ b/config/initializers/004-message_bus.rb
@@ -130,7 +130,6 @@ else
 end
 
 MessageBus.cache_assets = !Rails.env.development?
-MessageBus.enable_diagnostics
 
 if Rails.env == "test" || $0 =~ /rake$/
   # disable keepalive in testing