diff --git a/Setup-PDF.js-in-a-website.md b/Setup-PDF.js-in-a-website.md
index 6d22bfd..f021cc2 100644
--- a/Setup-PDF.js-in-a-website.md
+++ b/Setup-PDF.js-in-a-website.md
@@ -46,4 +46,4 @@ When the source code of PDF.js changes, the [online demo](http://mozilla.github.
     ```
 
 ## Build PDF.js from source
-After cloning PDF.js, you can build PDF.js from source by running `node make generic` in Git Bash or another terminal. This will create the built PDF.js in the `build` folder, which you can upload to your server. Note that you must include `compatibility.js` in order to support browsers like IE8+.
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+After cloning PDF.js, you can build PDF.js from source by running `gulp generic` in Git Bash or another terminal. This will create the built PDF.js in the `build` folder, which you can upload to your server. Note that you must include `compatibility.js` in order to support browsers like IE8+.
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