diff --git a/README.md b/README.md
index e4e98d6f..73d2042e 100644
--- a/README.md
+++ b/README.md
@@ -425,7 +425,7 @@ end
 class User
   include Virtus.model
 
-  attribute :info, Json, default: {}
+  attribute :info, Json, default: lambda { |user, attribute| {} }
 end
 
 user = User.new