diff --git a/pkgs/development/libraries/codec2/default.nix b/pkgs/development/libraries/codec2/default.nix
index 1f387f711e7..4a648b1f32a 100644
--- a/pkgs/development/libraries/codec2/default.nix
+++ b/pkgs/development/libraries/codec2/default.nix
@@ -1,11 +1,8 @@
-{ stdenv, fetchFromGitHub, cmake } :
+{ stdenv, fetchFromGitHub, cmake }:
 
-let
-  version = "0.9.2";
-
-in stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "codec2";
-  inherit version;
+  version = "0.9.2";
 
   src = fetchFromGitHub {
     owner = "drowe67";
@@ -14,15 +11,13 @@ in stdenv.mkDerivation {
     sha256 = "1jpvr7bra8srz8jvnlbmhf8andbaavq5v01qjnp2f61za93rzwba";
   };
 
-  enableParallelBuilding = true;
-
   nativeBuildInputs = [ cmake ];
 
   meta = with stdenv.lib; {
     description = "Speech codec designed for communications quality speech at low data rates";
     homepage = "http://www.rowetel.com/blog/?page_id=452";
     license = licenses.lgpl21;
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     maintainers = with maintainers; [ markuskowa ];
   };
 }