diff --git a/lib/shikashi/sandbox.rb b/lib/shikashi/sandbox.rb
index <HASH>..<HASH> 100644
--- a/lib/shikashi/sandbox.rb
+++ b/lib/shikashi/sandbox.rb
@@ -240,6 +240,9 @@ module Shikashi
     	     return mw
           end
 
+          return nil if method_name == :instance_eval
+          return nil if method_name == :binding
+
           if dest_source == ""
             return DummyWrapper.redirect_handler(klass,recv,method_name,method_id,sandbox)
           end
fixed instance_eval and binding by avoiding the use of DummyWrapper for them