diff --git a/docs/guide/css.md b/docs/guide/css.md
index b6779233d..910d3b1ea 100644
--- a/docs/guide/css.md
+++ b/docs/guide/css.md
@@ -82,8 +82,6 @@ Sometimes you may want to pass options to the pre-processor's webpack loader. Yo
 
 ``` js
 // vue.config.js
-const fs = require('fs')
-
 module.exports = {
   css: {
     loaderOptions: {