diff --git a/cmd/oci-unpack/oci-unpack.1.md b/cmd/oci-unpack/oci-unpack.1.md
index b7529f9..0fdb6e1 100644
--- a/cmd/oci-unpack/oci-unpack.1.md
+++ b/cmd/oci-unpack/oci-unpack.1.md
@@ -8,7 +8,7 @@ oci-unpack \- Unpack an image or image source layout
 **oci-unpack** [src] [dest] [flags]
 
 # DESCRIPTION
-`oci-unpack` validates an application/vnd.oci.image.manifest.v1+json and unpacks its layered filesystem to `dest`.
+`oci-unpack` validates an application/vnd.oci.image.manifest.v1+json, and the entire Merkle tree rooted on it, and unpacks its layered filesystem to `dest`.
 
 # OPTIONS
 **--help**