diff --git a/lib/isomorphic/html-styles.js b/lib/isomorphic/html-styles.js
index 76c7dd33a90b9..5eebb210e0736 100644
--- a/lib/isomorphic/html-styles.js
+++ b/lib/isomorphic/html-styles.js
@@ -1,8 +1,8 @@
 import React from 'react'
 import { prefixLink } from './gatsby-helpers'
 
+let stylesStr
 if (process.env.NODE_ENV === `production`) {
-  let stylesStr
   try {
     stylesStr = require(`!raw!public/styles.css`)
   } catch (e) {