diff --git a/pkgs/development/libraries/botan/generic.nix b/pkgs/development/libraries/botan/generic.nix
index b37fd6079b9e..2580b959bf2a 100644
--- a/pkgs/development/libraries/botan/generic.nix
+++ b/pkgs/development/libraries/botan/generic.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     inherit version;
     description = "Cryptographic algorithms library";
     maintainers = with maintainers; [ raskin ];
-    platforms = platforms.unix;
+    platforms = ["x86_64-linux" "i686-linux" "x86_64-darwin"];
     license = licenses.bsd2;
   };
   passthru.updateInfo.downloadPage = "http://files.randombit.net/botan/";