diff --git a/app/models/bulletin.rb b/app/models/bulletin.rb
index 81745cb..ed37674 100644
--- a/app/models/bulletin.rb
+++ b/app/models/bulletin.rb
@@ -51,7 +51,7 @@ class Bulletin
 
   # before_save :fetch_dept
 
-  scope :can_display, ->{where(:is_hidden=>false).any_of({:postdate.lt=>Time.now, :deadline.gt=>Time.now},{:postdate.lt=>Time.now, :deadline=>nil}).order_by([:is_top, :desc])}
+  scope :can_display, ->{where(:is_hidden=>false,:is_preview => false).any_of({:postdate.lt=>Time.now, :deadline.gt=>Time.now},{:postdate.lt=>Time.now, :deadline=>nil}).order_by([:is_top, :desc])}
   scope :is_approved, ->{where(:approved => true)}
 
   def update_user