diff --git a/app/helpers/welcome_helper.rb b/app/helpers/welcome_helper.rb
index a182a01c9..1723dcc55 100644
--- a/app/helpers/welcome_helper.rb
+++ b/app/helpers/welcome_helper.rb
@@ -105,9 +105,10 @@ module WelcomeHelper
     searchStudent(project).count
   end
   def find_new_forum_topics limit=9
-    activity = Redmine::Activity::Fetcher.new(nil)
-    activity.scope=['memos']
-    activity.events_welcome(nil, nil, {:limit => limit})
+    Memo.where('memos.parent_id IS NULL').reorder('ORDER BY memos.created_at DESC').limit(limit)
+    # activity = Redmine::Activity::Fetcher.new(nil)
+    # activity.scope=['memos']
+    # activity.events_welcome(nil, nil, {:limit => limit})
   end
 
   private