diff --git a/pkgs/development/node-packages/README.md b/pkgs/development/node-packages/README.md
index da822f9d468..8f14aadec14 100644
--- a/pkgs/development/node-packages/README.md
+++ b/pkgs/development/node-packages/README.md
@@ -8,6 +8,6 @@ To add a package from [NPM](https://www.npmjs.com/) to nixpkgs:
  2. Run the script: `cd pkgs/development/node-packages && sh generate.sh`.
  3. Build your new package to test your changes:
     `cd /path/to/nixpkgs && nix-build -A nodePackages.<new-or-updated-package>`.
-    To build against a specific node.js version (e.g. 5.x):
+    To build against a specific node.js version (e.g. 4.x):
     `nix-build -A nodePackages_4_x.<new-or-updated-package>`
  4. Add and commit all modified and generated files.