lib/mongomodel/concerns/attribute_methods/dirty.rb in mongomodel-0.2.5 vs lib/mongomodel/concerns/attribute_methods/dirty.rb in mongomodel-0.2.6

@@ -9,10 +9,10 @@
         after_save { changed_attributes.clear }
       end
       
       # Returns the attributes as they were before any changes were made to the document.
       def original_attributes
-        attributes.merge(changed_attributes)
+        {}.merge(attributes).merge(changed_attributes)
       end
     
     protected
       def changed_attributes
         attributes.changed