diff --git a/README.md b/README.md
index aede765..377ed09 100644
--- a/README.md
+++ b/README.md
@@ -10,8 +10,8 @@ Purpose:
 Recommended to put these in the relevant `~/.bashrc` file
 
 | Env Variable        | Description                                                                                |
-| ------------------- | ------------------------------------------------------------------------------------------ |
-| `HOSTNAME`          | Network hostname of where the backup is running                                            |
+|---------------------|--------------------------------------------------------------------------------------------|
+| `HOSTNAME`          | Network hostname of where the backup is running. Used to tag the backups in restic         |
 | `BACKUP_DIR`        | Directory to back up                                                                       |
 | `RESTIC_REPOSITORY` | Directory for the restic repository. This is usually on a mount point made from Proxmox    |
 | `RESTIC_PASSWORD`   | Password for the restic repository                                                         |