diff --git a/app/models/subject.rb b/app/models/subject.rb
index 65e685209..db2610236 100644
--- a/app/models/subject.rb
+++ b/app/models/subject.rb
@@ -87,7 +87,7 @@ class Subject < ApplicationRecord
       pluck(:challenge_id).uniq.size
     logger.info("#-----------")
     new_challenge_count = Challenge.left_joins(:games)
-                              .where(games: {user_id: current_user.id, status: 2}, shixun_id: shixuns.published_closed)
+                              .where(games: {user_id: User.current.id, status: 2}, shixun_id: shixuns.published_closed)
                               .uniq.count
     logger.info("#-----------")
     subject_challenge_count = shixuns.challenges_count