diff --git a/lib/frenzy/item.ex b/lib/frenzy/item.ex
index c34714c..c43c27b 100644
--- a/lib/frenzy/item.ex
+++ b/lib/frenzy/item.ex
@@ -38,7 +38,7 @@ defmodule Frenzy.Item do
     }
 
     if item.date do
-      Map.put(res, :created_at, DateTime.to_iso8601(item.date))
+      Map.put(res, :published, DateTime.to_iso8601(item.date))
     else
       res
     end