diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 3b9324d6a..5dc736c48 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1534,7 +1534,7 @@ class UsersController < ApplicationController
     stu_courses = @user.courses.visible.not_deleted.select{|course| @user.has_student_role(course)}
     stu_course_ids = stu_courses.empty? ? "(-1)" : "(" + stu_courses.map{|course| course.id}.join(',') + ")"
     @receive_homeworks = HomeworkCommon.where("course_id in #{stu_course_ids} and publish_time <= '#{Date.today}'").order("created_at desc").limit(5)
-    if (@manage_homeworks.empty? && @receive_homeworks.empty?) || (@receive_homeworks.empty?) || (!@manage_homeworks.empty? && !@receive_homeworks.empty? && @manage_homeworks.first.publish_time > @receive_homeworks.first.publish_time)
+    if (@manage_homeworks.empty? && @receive_homeworks.empty?) || (@receive_homeworks.empty?) || (!@manage_homeworks.empty? && !@receive_homeworks.empty? && @manage_homeworks.first.created_at > @receive_homeworks.first.created_at)
       @manage_pre = true
     else
       @manage_pre = false