lib/virtus/instance_methods.rb in virtus-1.0.1 vs lib/virtus/instance_methods.rb in virtus-1.0.2

@@ -189,10 +189,10 @@
     #
     # @return [self]
     #
     # @api public
     def set_default_attributes!
-      attribute_set.set_defaults(self, proc { |_| false })
+      attribute_set.set_defaults(self, proc { |object, attribute| attribute.defined?(object) })
       self
     end
 
     private