diff --git a/app/models/poll.rb b/app/models/poll.rb
index 5c1a9a64c..0ea76a8a3 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -103,7 +103,7 @@ class Poll < ApplicationRecord
     if course.is_end
       status = 4
     else
-      if user.present? && user.student_of_course?(course)
+      if user.present? && user.course_identity(course) == Course::STUDENT
         ex_time = get_poll_times(user.id,false)
         pb_time = ex_time[:publish_time]
         ed_time = ex_time[:end_time]