diff --git a/app/controllers/comments_controller.rb b/app/controllers/comments_controller.rb
index 348fd7f31..cc7c2776a 100644
--- a/app/controllers/comments_controller.rb
+++ b/app/controllers/comments_controller.rb
@@ -32,7 +32,7 @@ class CommentsController < ApplicationController
 
   # 列表
   def index
-    discusses = @hack.discusses.where(:root_id => nil)
+    discusses = Discuss.where(root_id: nil, dis_id: @hack.id, dis_type: @hack.class.to_s)
     @discusses_count = discusses.count
     @discusses= paginate discusses
   end