diff --git a/lib/jekyll/configuration.rb b/lib/jekyll/configuration.rb
index a72e51d8..340847c3 100644
--- a/lib/jekyll/configuration.rb
+++ b/lib/jekyll/configuration.rb
@@ -49,7 +49,8 @@ module Jekyll
         'use_divs'   => false,
         'png_engine' => 'blahtex',
         'png_dir'    => 'images/latex',
-        'png_url'    => '/images/latex'
+        'png_url'    => '/images/latex',
+        'fenced_code_blocks' => true
       },
 
       'rdiscount' => {
diff --git a/site/docs/configuration.md b/site/docs/configuration.md
index df93d9c6..f903adde 100644
--- a/site/docs/configuration.md
+++ b/site/docs/configuration.md
@@ -316,6 +316,7 @@ maruku:
   png_engine: blahtex
   png_dir:    images/latex
   png_url:    /images/latex
+  fenced_code_blocks: true
 
 rdiscount:
   extensions: []
@@ -380,4 +381,4 @@ In addition to the defaults mentioned above, you can also turn on recognition of
 For example, in your `_config.yml`:
 
     kramdown:
-      input: GFM
\ No newline at end of file
+      input: GFM