diff --git a/config/initializers/new_framework_defaults_6_1.rb b/config/initializers/new_framework_defaults_6_1.rb
index 26a97d92b..dd5b6b9c6 100644
--- a/config/initializers/new_framework_defaults_6_1.rb
+++ b/config/initializers/new_framework_defaults_6_1.rb
@@ -49,4 +49,4 @@ Rails.application.config.action_mailer.deliver_later_queue_name = nil
 
 # Generate a `Link` header that gives a hint to modern browsers about
 # preloading assets when using `javascript_include_tag` and `stylesheet_link_tag`.
-# Rails.application.config.action_view.preload_links_header = true
+Rails.application.config.action_view.preload_links_header = true