diff --git a/pkgs/development/tools/ocaml/omake/0.9.8.6-rc1.nix b/pkgs/development/tools/ocaml/omake/0.9.8.6-rc1.nix
index 48a6b3c1f64..986bd4609d5 100644
--- a/pkgs/development/tools/ocaml/omake/0.9.8.6-rc1.nix
+++ b/pkgs/development/tools/ocaml/omake/0.9.8.6-rc1.nix
@@ -33,5 +33,6 @@ stdenv.mkDerivation {
     description = "Omake build system";
     homepage = "${webpage}";
     license = "GPL";
+    platforms = ocaml.meta.platforms;
   };
 }