diff --git a/app/controllers/hack_user_lastest_codes_controller.rb b/app/controllers/hack_user_lastest_codes_controller.rb
index d27ec5291..442e9ca3b 100644
--- a/app/controllers/hack_user_lastest_codes_controller.rb
+++ b/app/controllers/hack_user_lastest_codes_controller.rb
@@ -8,7 +8,7 @@ class HackUserLastestCodesController < ApplicationController
 
   def show
     @my_hack.update_attribute(:submit_status, 0) if @my_hack.submit_status == 1
-    @modify = @my_hack.modify_time.to_i < @hack.modify_time.to_i
+    @modify = @my_hack.modify_time.to_i < @hack.hack_codes.first.modify_time.to_i
   end
 
   def update_code