diff --git a/app/views/weapps/attendances/show.json.jbuilder b/app/views/weapps/attendances/show.json.jbuilder
index fa725a878..4b16b1f72 100644
--- a/app/views/weapps/attendances/show.json.jbuilder
+++ b/app/views/weapps/attendances/show.json.jbuilder
@@ -3,6 +3,7 @@ json.leave_count @leave_count
 json.absence_count @absence_count
 json.all_count @all_count
 json.code @attendance.attendance_code
+json.mode @attendance.mode
 json.edit_auth @user_course_identity < Course::PROFESSOR || @attendance.user_id == User.current.id
 json.course_groups @groups do |group|
   json.(group, :id, :name, :course_members_count)