diff --git a/checksum/checksum.go b/checksum/checksum.go
index 37238af..9d227ad 100644
--- a/checksum/checksum.go
+++ b/checksum/checksum.go
@@ -24,17 +24,17 @@ type Checksum refs.Checksum
 
 // Type represents the enumeration
 // of checksum types.
-type Type uint8
+type Type refs.ChecksumType
 
 const (
 	// Unknown is an undefined checksum type.
-	Unknown Type = iota
+	Unknown Type = Type(refs.UnknownChecksum)
 
 	// SHA256 is a SHA256 checksum type.
-	SHA256
+	SHA256 = Type(refs.SHA256)
 
 	// TZ is a Tillich-Zémor checksum type.
-	TZ
+	TZ = Type(refs.TillichZemor)
 )
 
 // ReadFromV2 reads Checksum from the refs.Checksum message. Checks if the