diff --git a/lib/monads/monad.rb b/lib/monads/monad.rb
index 26e0bbd..30672f6 100644
--- a/lib/monads/monad.rb
+++ b/lib/monads/monad.rb
@@ -12,6 +12,12 @@ def method_missing(*args, &block)
       end
     end
 
+    def respond_to_missing?(method_name, include_private=false)
+      super || within do |value|
+        value.respond_to?(method_name, include_private)
+      end
+    end
+
     private
 
     def ensure_monadic_result(&block)