diff --git a/app/assets/javascripts/main_include.js b/app/assets/javascripts/main_include.js
index d3ee8aada6e..c6d4ef2d966 100644
--- a/app/assets/javascripts/main_include.js
+++ b/app/assets/javascripts/main_include.js
@@ -5,6 +5,8 @@
 // Pagedown customizations
 //= require ./pagedown_custom.js
 
+// This is a BUG we should fix
+// it is only required here cause preview is not loading it using LAB
 //= require highlight.pack.js
 
 // Stuff we need to load first