diff --git a/Gemfile b/Gemfile
index 738b5325..07cb0ca2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -32,7 +32,7 @@ gem 'bootstrap_pagedown'
 gem 'pagedown-rails'
 gem 'sorcery'
 gem 'thread_safe'
-gem 'turbolinks', '< 5.0.0'
+gem 'turbolinks', '< 5.0.0' # newer versions prevent loading ACE if the page containing is not accessed directly / refreshed
 gem 'uglifier'
 gem 'will_paginate'
 gem 'tubesock'