diff --git a/pkgs/tools/security/john/default.nix b/pkgs/tools/security/john/default.nix
index 7552b21ed33..e55e97656f6 100644
--- a/pkgs/tools/security/john/default.nix
+++ b/pkgs/tools/security/john/default.nix
@@ -69,6 +69,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2;
     homepage = https://github.com/magnumripper/JohnTheRipper/;
     maintainers = with maintainers; [ offline ];
-    platforms = platforms.unix;
+    platforms = [ "x86_64-linux" "x86_64-darwin"];
   };
 }