diff --git a/app/models/reminder_mail.rb b/app/models/reminder_mail.rb
index 3c924a28..cc71bf55 100644
--- a/app/models/reminder_mail.rb
+++ b/app/models/reminder_mail.rb
@@ -18,7 +18,7 @@ def register_reminder
         unless registers.empty?
           AdminMailer.with(user: user, registers: registers)
                      .register_reminder_email
-                     .deliver_later
+                     .deliver_now
         end
       end
     end