diff --git a/app/jobs/fs/sync_box_job.rb b/app/jobs/fs/sync_box_job.rb
index 1bfa355f..4ff4065e 100644
--- a/app/jobs/fs/sync_box_job.rb
+++ b/app/jobs/fs/sync_box_job.rb
@@ -4,7 +4,7 @@ def perform(box, from: Date.today - 1.week, to: Date.tomorrow)
       raise unless box.is_a?(Fs::Box)
       return unless box.syncable?
 
-      box.messages.outbox.find_each do |outbox_message|
+      box.messages.outbox.where(type: [nil, 'Message']).find_each do |outbox_message|
         DownloadSentMessageRelatedMessagesJob.perform_later(outbox_message, from: from, to: to)
       end
     end