diff --git a/app/controllers/exercise_controller.rb b/app/controllers/exercise_controller.rb
index 9c4ce463a..28f532db6 100644
--- a/app/controllers/exercise_controller.rb
+++ b/app/controllers/exercise_controller.rb
@@ -443,7 +443,8 @@ class ExerciseController < ApplicationController
       # REDO: 提示提交成功
     else
       # 更新提交状态
-      @exercise.exercise_users.first.update_attributes(:status => true)
+      cur_exercise_user = ExerciseUser.where("user_id =? and exercise_id=?", User.current, @exercise.id).first
+      cur_exercise_user.update_attributes(:status => 1)
       # 答题过程中需要统计完成量
       @uncomplete_question = get_uncomplete_question(@exercise, User.current)
       # 获取改学生的考试得分