diff --git a/lib/mdl/doc.rb b/lib/mdl/doc.rb
index <HASH>..<HASH> 100644
--- a/lib/mdl/doc.rb
+++ b/lib/mdl/doc.rb
@@ -1,4 +1,5 @@
 require 'kramdown'
+require 'mdl/kramdown_parser'
 
 module MarkdownLint
   ##
Require the markdownlint kramdown parser in doc.rb

This allows doc.rb to be included separately without having to also include
the parser module.