diff --git a/CLI-Usage.md b/CLI-Usage.md
index 12bc8e8..48c0756 100644
--- a/CLI-Usage.md
+++ b/CLI-Usage.md
@@ -6,6 +6,7 @@ Repertory supports multiple storage backends, each defined at mount time:
 
 | Short | Long | Description |
 |---:|---|---|
+| — | — | **Sia (default)**. Chosen automatically when no provider flag is given. |
 | `-s3` | `--s3` | Amazon S3 or S3-compatible storage. |
 | `-sia` | `--sia` | Sia renterd backend. |
 | `-en` | `--encrypt` | Transparent encryption provider. Read-only passthrough to a local folder or disk, decrypting both filenames and file contents with **XChaCha20-Poly1305**. |