diff --git a/app/views/courses/_set_course_time.html.erb b/app/views/courses/_set_course_time.html.erb
index 0c28b90a7..27c6c0c99 100644
--- a/app/views/courses/_set_course_time.html.erb
+++ b/app/views/courses/_set_course_time.html.erb
@@ -1,6 +1,6 @@
 <% 
 	id = "finish_course_#{course.id}"
-	display = (course.teacher.id == User.current.id || User.current.admin?)
+	display = (User.current.allowed_to?(:as_teacher,course) || User.current.admin?)
 %>
 
 <% if display #如果课程已结束%>