diff --git a/pkgs/development/ocaml-modules/dtoa/default.nix b/pkgs/development/ocaml-modules/dtoa/default.nix
index da075f5c7982..44bc5d7498bf 100644
--- a/pkgs/development/ocaml-modules/dtoa/default.nix
+++ b/pkgs/development/ocaml-modules/dtoa/default.nix
@@ -13,7 +13,7 @@ buildDunePackage rec {
     sha256 = "0zkhn0rdq82g6gamsv6nkx6i44s8104nh6jg5xydazl9jl1704xn";
   };
 
-  hardeningDisable = lib.optional stdenv.isDarwin "strictoverflow";
+  hardeningDisable = lib.optional stdenv.cc.isClang "strictoverflow";
 
   meta = with lib; {
     homepage = "https://github.com/flowtype/ocaml-dtoa";