diff --git a/docs/b_n_r_backup.md b/docs/b_n_r_backup.md
index 87822ccc8..9ce771c4b 100644
--- a/docs/b_n_r_backup.md
+++ b/docs/b_n_r_backup.md
@@ -22,8 +22,8 @@ You can also use "all" as second parameter to backup all components.
 The script will ask you for a backup location. Inside of this location it will create folders in the format "mailcow_DATE".
 You should not rename those folders to not break the restore process.
 
-To run a backup unattended, define BACKUP_LOCATION as environment variable before starting the script:
+To run a backup unattended, define MAILCOW_BACKUP_LOCATION as environment variable before starting the script:
 
 ```
-BACKUP_LOCATION=/opt/backup /opt/mailcow-dockerized/helper-scripts/backup_and_restore.sh backup all
+MAILCOW_BACKUP_LOCATION=/opt/backup /opt/mailcow-dockerized/helper-scripts/backup_and_restore.sh backup all
 ```