diff --git a/pkgs/development/web/nodejs/nodejs.nix b/pkgs/development/web/nodejs/nodejs.nix
index eafaf956ee0..8d8a253f01d 100644
--- a/pkgs/development/web/nodejs/nodejs.nix
+++ b/pkgs/development/web/nodejs/nodejs.nix
@@ -5,7 +5,7 @@
 
 with stdenv.lib;
 
-{ enableNpm ? true, version, sha256, patches }:
+{ enableNpm ? true, version, sha256, patches } @args:
 
 let
 
@@ -54,6 +54,8 @@ in
 
     setupHook = ./setup-hook.sh;
 
+    pos = builtins.unsafeGetAttrPos "version" args;
+
     inherit patches;
 
     preBuild = optionalString stdenv.isDarwin ''