diff --git a/doc/manual/43-backup-commands.en.md b/doc/manual/43-backup-commands.en.md
index e9b1599f6..b22601e70 100644
--- a/doc/manual/43-backup-commands.en.md
+++ b/doc/manual/43-backup-commands.en.md
@@ -70,7 +70,7 @@ The `delete` command accepts any [shortcut](#backup-id-shortcuts) to identify ba
 > **IMPORTANT:**
 > If the specified backup has dependent block-level incremental backups,
 > those backups and all their dependents will also be deleted during this operation
-> as they would effectively become unsuable for recovery with a missing parent in its chain.
+> as they would effectively become unusable for recovery with a missing parent in its chain.
 
 ## `keep`