diff --git a/pkgs/development/ocaml-modules/cstruct/ppx.nix b/pkgs/development/ocaml-modules/cstruct/ppx.nix
index 5f4130dc23f..78600b78306 100644
--- a/pkgs/development/ocaml-modules/cstruct/ppx.nix
+++ b/pkgs/development/ocaml-modules/cstruct/ppx.nix
@@ -1,4 +1,8 @@
-{ buildDunePackage, cstruct, ppx_tools_versioned }:
+{ lib, buildDunePackage, cstruct, ppx_tools_versioned }:
+
+if !lib.versionAtLeast (cstruct.version or "1") "3"
+then cstruct
+else
 
 buildDunePackage {
 	pname = "ppx_cstruct";