diff --git a/doc/backup-email.md b/doc/backup-email.md
index c7de3e7..a8ec760 100644
--- a/doc/backup-email.md
+++ b/doc/backup-email.md
@@ -29,6 +29,7 @@ The configuration goes to `global-config-overlay`, these are the parameters:
 
 * `BackupSendBinary`: whether to send binary backup
 * `BackupSendExport`: whether to send configuration export
+* `BackupSendGlobalConfig`: whether to send `global-config-overlay`
 * `BackupPassword`: password to encrypt the backup with
 * `BackupRandomDelay`: delay up to amount of seconds when run from scheduler