diff --git a/pkgs/development/ocaml-modules/lwt/default.nix b/pkgs/development/ocaml-modules/lwt/default.nix
index 4798cfe69c27..be15d2b72a54 100644
--- a/pkgs/development/ocaml-modules/lwt/default.nix
+++ b/pkgs/development/ocaml-modules/lwt/default.nix
@@ -18,8 +18,7 @@ buildDunePackage rec {
   };
 
   nativeBuildInputs = [ pkg-config cppo dune-configurator ];
-  buildInputs = [ ]
-   ++ optional (!versionAtLeast ocaml.version "4.08") ocaml-syntax-shims
+  buildInputs = optional (!versionAtLeast ocaml.version "4.08") ocaml-syntax-shims
    ++ optional (!versionAtLeast ocaml.version "4.07") ncurses;
   propagatedBuildInputs = [ libev mmap ocplib-endian seq result ];