diff --git a/pkgs/development/ocaml-modules/atdgen/default.nix b/pkgs/development/ocaml-modules/atdgen/default.nix
index f35e6617a9bd..807276d31b21 100644
--- a/pkgs/development/ocaml-modules/atdgen/default.nix
+++ b/pkgs/development/ocaml-modules/atdgen/default.nix
@@ -11,7 +11,7 @@ buildDunePackage {
   doCheck = true;
   checkInputs = [ alcotest atdgen-codec-runtime ];
 
-  meta = atd.meta // {
+  meta = (builtins.removeAttrs atd.meta [ "mainProgram" ]) // {
     description = "Generates efficient JSON serializers, deserializers and validators";
   };
 }