diff --git a/docs/api.md b/docs/api.md
index db9df758..71b13d6f 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -485,7 +485,7 @@ The default flags that Chromium will be launched with.
 - returns: <[Object]>
 
 Returns a list of devices to be used with [`page.emulate(options)`](#pageemulateoptions). Actual list of
-devices can be found in [src/DeviceDescriptors.js](https://github.com/puppeteer/puppeteer/blob/master/src/DeviceDescriptors.js).
+devices can be found in [src/DeviceDescriptors.js](https://github.com/puppeteer/puppeteer/blob/master/src/DeviceDescriptors.ts).
 
 ```js
 const puppeteer = require('puppeteer');