diff --git a/lib/straight/order.rb b/lib/straight/order.rb
index 36d46b9..fa249c4 100644
--- a/lib/straight/order.rb
+++ b/lib/straight/order.rb
@@ -37,8 +37,8 @@ def self.included(base)
           tid
           title
         }.each do |field|
-          attr_reader field unless base.method_defined?(field)
-          attr_writer field unless base.method_defined?("#{field}=")
+          attr_reader field unless base.method_defined?(field) || (base.respond_to?(:attribute_method?) && base.attribute_method?(field))
+          attr_writer field unless base.method_defined?("#{field}=") ||  (base.respond_to?(:attribute_method?) && base.attribute_method?("#{field}="))
         end
         prepend Prependable
         include Includable