diff --git a/key/set/packer.go b/key/set/packer.go
index e6431ec..2003f93 100644
--- a/key/set/packer.go
+++ b/key/set/packer.go
@@ -12,7 +12,7 @@ import (
 )
 
 func (ks *Keyset) MarshalToCBOR() ([]byte, error) {
-	identityBytes, err := crypto.MarshalPrivateKey(ks.Identity)
+	identityBytes, err := ks.Identity.Raw()
 	if err != nil {
 		return nil, fmt.Errorf("marshal identity key: %w", err)
 	}