diff --git a/pkgs/development/libraries/aften/default.nix b/pkgs/development/libraries/aften/default.nix
index fb16c71fd19..22e91ee61d7 100644
--- a/pkgs/development/libraries/aften/default.nix
+++ b/pkgs/development/libraries/aften/default.nix
@@ -16,6 +16,6 @@ stdenv.mkDerivation rec {
 		description = "An audio encoder which generates compressed audio streams based on ATSC A/52 specification";
 		homepage = "http://aften.sourceforge.net/";
 		license = stdenv.lib.licenses.lgpl2;
-		platforms = stdenv.lib.platforms.unix;
+		platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
 	};
 }