diff --git a/code_style.md b/code_style.md
index cd4eabefb6..a96e0e56d6 100644
--- a/code_style.md
+++ b/code_style.md
@@ -149,7 +149,7 @@ ECMAScript
 
 React
 -----
-- Use ES6 classes, although bear in mind a lot of code uses createClass.
+- Use React.createClass rather than ES6 classes for components, as the boilerplate is way too heavy on ES6 currently.  ES7 might improve it.
 - Pull out functions in props to the class, generally as specific event handlers:
 
   ```jsx