diff --git a/app/views/admins/enroll_lists/export.xlsx.axlsx b/app/views/admins/enroll_lists/export.xlsx.axlsx
index b6f403ab8..a075524ed 100644
--- a/app/views/admins/enroll_lists/export.xlsx.axlsx
+++ b/app/views/admins/enroll_lists/export.xlsx.axlsx
@@ -21,7 +21,7 @@ wb.add_worksheet(name: '报名列表') do |sheet|
       member_user.professional_certification ? "√" : "",
       member_user.school_name,
       member_user.school_province,
-      member.created_at.strftime('%Y-%m-%d %H:%M'),
+      team.created_at&.strftime('%Y-%m-%d %H:%M'),
       rank
     ]
     sheet.add_row(data)