diff --git a/pkgs/development/python-modules/pyside/tools.nix b/pkgs/development/python-modules/pyside/tools.nix
index abb0bdebd5d..a0bd73dd61e 100644
--- a/pkgs/development/python-modules/pyside/tools.nix
+++ b/pkgs/development/python-modules/pyside/tools.nix
@@ -13,7 +13,9 @@ buildPythonPackage rec {
 
   enableParallelBuilding = true;
 
-  buildInputs = [ cmake pyside qt4 pysideShiboken ];
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [ pyside qt4 pysideShiboken ];
 
   meta = {
     description = "Tools for pyside, the LGPL-licensed Python bindings for the Qt cross-platform application and UI framework";