diff --git a/pkgs/development/libraries/chmlib/default.nix b/pkgs/development/libraries/chmlib/default.nix
index e572db68e838..fbefee48d5b2 100644
--- a/pkgs/development/libraries/chmlib/default.nix
+++ b/pkgs/development/libraries/chmlib/default.nix
@@ -1,8 +1,8 @@
-{stdenv, fetchurl}:
+{ stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
   name = "chmlib-0.40";
-  
+
   src = fetchurl {
     url = "${meta.homepage}/${name}.tar.bz2";
     sha256 = "18zzb4x3z0d7fjh1x5439bs62dmgsi4c1pg3qyr7h5gp1i5xcj9l";
@@ -10,8 +10,8 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = http://www.jedrea.com/chmlib;
-    license = "LGPL";
+    license = stdenv.lib.licenses.lgpl2;
     description = "A library for dealing with Microsoft ITSS/CHM format files";
-    platforms = stdenv.lib.platforms.unix;
+    platforms = ["x86_64-linux" "i686-linux" "x86_64-darwin"];
   };
 }