diff --git a/pkgs/development/tools/ocaml/findlib/default.nix b/pkgs/development/tools/ocaml/findlib/default.nix
index 2286c0945fcf..86685493d4c6 100644
--- a/pkgs/development/tools/ocaml/findlib/default.nix
+++ b/pkgs/development/tools/ocaml/findlib/default.nix
@@ -9,7 +9,8 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-K0K4vVRIjWTEvzy3BUtLN70wwdwSvUMeoeTXrYqYD+I=";
   };
 
-  buildInputs = [m4 ncurses ocaml];
+  nativeBuildInputs = [m4 ocaml];
+  buildInputs = [ ncurses ];
 
   patches = [ ./ldconf.patch ./install_topfind.patch ];