diff --git a/app/controllers/homework_attach_controller.rb b/app/controllers/homework_attach_controller.rb
index 28bac9627..816ee0bf8 100644
--- a/app/controllers/homework_attach_controller.rb
+++ b/app/controllers/homework_attach_controller.rb
@@ -570,9 +570,6 @@ class HomeworkAttachController < ApplicationController
 
   #获取课程的老师列表
   def find_course_teachers course
-    t = []
-    course.members.map{|m| t << m.user_id if m.user.allowed_to?(:as_teacher,course)}
-
     teachers = "("
     teacher_members = searchTeacherAndAssistant(course)
     teacher_members.each do |member|