diff --git a/pkgs/by-name/c-/c-siphash/package.nix b/pkgs/by-name/c-/c-siphash/package.nix
index 442d863c710c..1daf05d9ba78 100644
--- a/pkgs/by-name/c-/c-siphash/package.nix
+++ b/pkgs/by-name/c-/c-siphash/package.nix
@@ -38,6 +38,7 @@ stdenv.mkDerivation rec {
       asl20
       lgpl2Plus
     ];
+    platforms = lib.platforms.unix;
     maintainers = with lib.maintainers; [ qbisi ];
   };
 }