diff --git a/lib/main/build-site.js b/lib/main/build-site.js
index ffa9d03cc..b383dfb2c 100644
--- a/lib/main/build-site.js
+++ b/lib/main/build-site.js
@@ -46,6 +46,11 @@ function build(type) {
     }
   });
 
+  $('h3 code em').parent().each(function() {
+    var $code = $(this);
+    $code.html($code.html().replace(/<\/?em>/g, '_'));
+  });
+
   var html = [
     // Append YAML front matter.
     '---',