diff --git a/app/models/course.rb b/app/models/course.rb
index 5068e38e..79b8c068 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -508,7 +508,7 @@ class Course < ActiveRecord::Base
 
   # 课堂实训作业的评测次数
   def evaluate_count
-    course_user_ids = self.members.map(&:user_id)
+    course_user_ids = self.students.map(&:user_id)
     shixun_ids = self.homework_commons.joins(:homework_commons_shixuns).where(homework_type: 4).pluck(:shixun_id)
     return 0 if shixun_ids.blank?
     Game.joins(:challenge).where(challenges: {shixun_id: shixun_ids}, games: {user_id: course_user_ids}).sum(:evaluate_count)