diff --git a/website/docs/guide/advanced/performance.md b/website/docs/guide/advanced/performance.md
index c8a38a84..3db62691 100644
--- a/website/docs/guide/advanced/performance.md
+++ b/website/docs/guide/advanced/performance.md
@@ -238,7 +238,7 @@ const App = () => {
 
 ```js
 // webpack.config.js
-mmodule.exports = {
+module.exports = {
   // ...
   externals: {
     'react': 'React',