diff --git a/pkgs/tools/backup/bakelite/default.nix b/pkgs/tools/backup/bakelite/default.nix
index e022ba942d28..c67741b06869 100644
--- a/pkgs/tools/backup/bakelite/default.nix
+++ b/pkgs/tools/backup/bakelite/default.nix
@@ -28,6 +28,7 @@ stdenv.mkDerivation rec {
     description = "Incremental backup with strong cryptographic confidentality";
     license = licenses.gpl2;
     maintainers = with maintainers; [ mvs ];
-    platforms = platforms.unix;
+    # no support for Darwin (yet: https://github.com/richfelker/bakelite/pull/5)
+    platforms = platforms.linux;
   };
 }