diff --git a/app/models/course_message.rb b/app/models/course_message.rb
index 7774dbf0c..a3578d500 100644
--- a/app/models/course_message.rb
+++ b/app/models/course_message.rb
@@ -32,6 +32,6 @@ class CourseMessage < ApplicationRecord
       belong_container: course, extra: content.to_i == 2 ? '9' : '7', tiding_type: 'System', status: deal_status
     )
     # 将申请消息置为已处理
-    Tiding.where(trigger_user_id: user_id, container_id: course_id, container_type: 'JoinCourse', status: 0).update_all(status: 1)
+    Tiding.where(trigger_user_id: course_message_id, container_id: course_id, container_type: 'JoinCourse', status: 0).update_all(status: 1)
   end
 end
\ No newline at end of file