diff --git a/Setting-up-pdf.js-Development-Environment-for-Windows.md b/Setting-up-pdf.js-Development-Environment-for-Windows.md
index 6eff7ef..0d0ca8f 100644
--- a/Setting-up-pdf.js-Development-Environment-for-Windows.md
+++ b/Setting-up-pdf.js-Development-Environment-for-Windows.md
@@ -2,7 +2,9 @@ The simplest way to setup the development environment for the pdf.js project:
 
 * Git for Windows (http://code.google.com/p/msysgit/);
 
-* Mozilla build environment (http://ftp.mozilla.org/pub/mozilla.org/mozilla/libraries/win32/MozillaBuildSetup-Latest.exe).
+* Mozilla build environment (http://ftp.mozilla.org/pub/mozilla.org/mozilla/libraries/win32/MozillaBuildSetup-Latest.exe);
+
+* Node.js (http://nodejs.org/)
 
 If the Visual Studio is not installed or to avoid switching between the git bash and the Mozilla build environment, modify any startXXX.cmd file in the c:\mozilla-build to look like https://gist.github.com/1518181 .