diff --git a/app/controllers/welcome_controller.rb b/app/controllers/welcome_controller.rb
index 00bab5b6..c9d41c0a 100644
--- a/app/controllers/welcome_controller.rb
+++ b/app/controllers/welcome_controller.rb
@@ -153,7 +153,7 @@ class WelcomeController < ApplicationController
         if local_challenges.present?
           local_challenges.each do |local_challenge|
             new_challenge = Challenge.new
-            new_challenge.attributes = local_challenge.attributes.dup.except("id","local_shixun_id","user_id")
+            new_challenge.attributes = local_challenge.attributes.dup.except("id","local_shixun_id","user_id", "test_set_score")
             new_challenge.user_id = User.current.id
             new_challenge.shixun_id = shixun.id
             new_challenge.save!