diff --git a/pkgs/by-name/c-/c-stdaux/package.nix b/pkgs/by-name/c-/c-stdaux/package.nix
index 6f77d3486207..d677c74f4038 100644
--- a/pkgs/by-name/c-/c-stdaux/package.nix
+++ b/pkgs/by-name/c-/c-stdaux/package.nix
@@ -34,6 +34,7 @@ stdenv.mkDerivation rec {
       asl20
       lgpl2Plus
     ];
+    platforms = lib.platforms.unix;
     maintainers = with lib.maintainers; [ qbisi ];
   };
 }