diff --git a/lib/rss_ntu_job.rb b/lib/rss_ntu_job.rb
index d7126a1..e3a9b48 100644
--- a/lib/rss_ntu_job.rb
+++ b/lib/rss_ntu_job.rb
@@ -84,7 +84,7 @@ recent_feed.each do |title, bulletin|
   categories, coll_bulletin, coll_cat = get_mongo_and_categories
   category_id, categories = get_category_id(bulletin[:category], categories, coll_cat)
 
-  unless coll_bulletin.find_one(rss_link: bulletin[:link]) 
+  unless coll_bulletin.find_one(title: {:zh_tw => title, :en => ""}) 
     bulletin = {  _type: "Bulletin",
                   postdate: bulletin[:date],
                   created_at: bulletin[:date],