diff --git a/pkgs/development/ocaml-modules/gd4o/default.nix b/pkgs/development/ocaml-modules/gd4o/default.nix
index cd2069648566..f3206c2385a3 100644
--- a/pkgs/development/ocaml-modules/gd4o/default.nix
+++ b/pkgs/development/ocaml-modules/gd4o/default.nix
@@ -1,5 +1,8 @@
 { lib, stdenv, fetchurl, ocaml, gd, freetype, findlib, zlib, libpng, libjpeg }:
 
+lib.throwIf (lib.versionAtLeast ocaml.version "5.0")
+  "gd4o is not available for OCaml ${ocaml.version}"
+
 stdenv.mkDerivation rec {
   pname = "ocaml${ocaml.version}-gd4o";
   version = "1.0a5";