--- a/sertop/sertop_loader.ml	2024-11-14 11:49:00.887576232 +0100
+++ b/sertop/sertop_loader.ml	2024-11-14 11:49:32.433659096 +0100
@@ -51,7 +51,7 @@
   else None
 
 let plugin_handler user_handler =
-  let loader = Option.default (Fl_dynload.load_packages ~debug:false) user_handler in
+  let loader = Option.default (Fl_dynload.load_packages ?loadfile:None ~debug:false) user_handler in
   fun fl_pkg ->
     try
       let _, fl_pkg = Mltop.PluginSpec.repr fl_pkg in