diff --git a/lib/grocer/newsstand_notification.rb b/lib/grocer/newsstand_notification.rb
index <HASH>..<HASH> 100644
--- a/lib/grocer/newsstand_notification.rb
+++ b/lib/grocer/newsstand_notification.rb
@@ -11,15 +11,15 @@ module Grocer
   #     #=> { aps: { 'content-available' => 1 } }
   class NewsstandNotification < Notification
 
+    def initialize(payload = {})
+      super(payload.merge(content_available: true))
+    end
+
     private
 
     def validate_payload
       true
     end
 
-    def payload_hash
-      { aps: {'content-available' => 1} }
-    end
-
   end
 end
DRY-up setting of the content-available field

A NewsstandNotification just merges in the value and lets the base
Notification do the work.