diff --git a/pkgs/development/ocaml-modules/lwt/default.nix b/pkgs/development/ocaml-modules/lwt/default.nix
index 20acb75d931..0c81775f236 100644
--- a/pkgs/development/ocaml-modules/lwt/default.nix
+++ b/pkgs/development/ocaml-modules/lwt/default.nix
@@ -16,9 +16,9 @@ stdenv.mkDerivation {
     sha256 = "0idci0zadpb8hmblszsrvg6yf36w5a9y6rsdwjc3jww71dgrw5d9";
   };
 
-  buildInputs = [ocaml_oasis pkgconfig which cryptopp ocaml findlib glib libev ncurses camlp4];
+  buildInputs = [ocaml_oasis pkgconfig which cryptopp ocaml findlib glib ncurses camlp4];
 
-  propagatedBuildInputs = [ ocaml_react ocaml_ssl ocaml_text ];
+  propagatedBuildInputs = [ ocaml_react ocaml_ssl ocaml_text libev ];
 
   configureFlags = [ "--enable-react" "--enable-glib" "--enable-ssl" "--enable-text" "--disable-ppx" ]
   ++ optional (versionAtLeast ocaml_version "4.0" && ! versionAtLeast ocaml_version "4.02") "--enable-toplevel";