diff --git a/backupnaz.sh b/backupnaz.sh
index c26861a..4635104 100755
--- a/backupnaz.sh
+++ b/backupnaz.sh
@@ -16,4 +16,4 @@ else
 	fi 
 fi
 
-time ionice -c 2 sudo rsync --info=progress2 -av --exclude-from /root/.backup_excludes naz:/mnt/md1/ /mnt/usb/
+time ionice -c 2 sudo rsync --info=progress2 -av --delete --exclude-from /root/.backup_excludes naz:/mnt/md1/ /mnt/usb/