diff --git a/app/controllers/polls_controller.rb b/app/controllers/polls_controller.rb
index 039d5e5c8..2504b8eb8 100644
--- a/app/controllers/polls_controller.rb
+++ b/app/controllers/polls_controller.rb
@@ -1436,7 +1436,7 @@ class PollsController < ApplicationController
       if poll_un_anony
         user_login = u_user.login
         user_name = u_user.real_name.present? ? u_user.real_name : "--"
-        user_class = poll.course.user_group_name
+        user_class = poll.course.user_group_name(u_user.id)
         user_student_id = u_user.student_id.present? ? u_user.student_id : "--"
         user_school_name = u_user.school_name.present? ? u_user.school_name : "--"
         user_cell += [user_login,user_name, user_class, u_user.mail, user_student_id, user_school_name]