diff --git a/modern/src/maki-interpreter/objects.test.js b/modern/src/maki-interpreter/objects.test.js
index ae01f65d..e9e47793 100644
--- a/modern/src/maki-interpreter/objects.test.js
+++ b/modern/src/maki-interpreter/objects.test.js
@@ -6,6 +6,7 @@ const getMakiMethods = obj =>
     return (
       typeof obj[name] === "function" &&
       !name.startsWith("js_") &&
+      !name.startsWith("_") &&
       name !== "constructor"
     );
   });