diff --git a/app/models/poll.rb b/app/models/poll.rb
index 7f0d2fd94..9cb860f61 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -104,7 +104,7 @@ class Poll < ApplicationRecord
       status = 4
     else
       if user.present? && user.student_of_course?(course)
-        ex_time = get_poll_times(user_id,false)
+        ex_time = get_poll_times(user.id,false)
         pb_time = ex_time[:publish_time]
         ed_time = ex_time[:end_time]
         if pb_time.present? && ed_time.present? && pb_time <= Time.now && ed_time > Time.now