diff --git a/pkgs/development/libraries/libmng/default.nix b/pkgs/development/libraries/libmng/default.nix
index 284e82f9ad97..931db8bdf422 100644
--- a/pkgs/development/libraries/libmng/default.nix
+++ b/pkgs/development/libraries/libmng/default.nix
@@ -18,6 +18,6 @@ stdenv.mkDerivation rec {
     homepage = http://www.libmng.com;
     license = licenses.zlib;
     maintainers = with maintainers; [ marcweber urkud ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }