diff --git a/pkgs/development/python-modules/pyside/tools.nix b/pkgs/development/python-modules/pyside/tools.nix
index 9698c09f3478..cc52a0502f28 100644
--- a/pkgs/development/python-modules/pyside/tools.nix
+++ b/pkgs/development/python-modules/pyside/tools.nix
@@ -12,6 +12,12 @@ buildPythonPackage rec {
     sha256 = "017i2yxgjrisaifxqnl3ym8ijl63l2yl6a3474dsqhlyqz2nx2ll";
   };
 
+  outputs = [ "out" "dev" ];
+
+  preConfigure = ''
+    cmakeFlagsArray=("-DCMAKE_INSTALL_PREFIX=$dev")
+  '';
+
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ qt4 ];