diff --git a/lib/dsl/ferrari.rb b/lib/dsl/ferrari.rb
index 0d1e192..27760bf 100755
--- a/lib/dsl/ferrari.rb
+++ b/lib/dsl/ferrari.rb
@@ -301,7 +301,7 @@ class MethodBuilder
       public_instance_methods.each do |m|
         # maybe we shouldn't be undefing object_id.  What are the implications?  Can we make object_id a
         # pass through to the underlying object's object_id?
-        a = [:method_missing, :new, :public_instance_methods, :__send__, :__id__]
+        a = [:method_missing, :new, :public_instance_methods, :__send__, :__id__, :object_id]
         undef_method m.to_sym unless a.include? m.to_sym
       end