diff --git a/acp/identity/errors.go b/acp/identity/errors.go
index ca779ac102..54f272b780 100644
--- a/acp/identity/errors.go
+++ b/acp/identity/errors.go
@@ -20,7 +20,7 @@ const errDIDCreation = "could not produce did for key"
 
 var ErrDIDCreation = errors.New(errDIDCreation)
 
-func NewErrDIDCreation(inner error, keytype string, pubKey []byte) error {
+func newErrDIDCreation(inner error, keytype string, pubKey []byte) error {
 	return errors.Wrap(
 		errDIDCreation,
 		inner,
diff --git a/acp/identity/identity.go b/acp/identity/identity.go
index 5220429559..8d9a84c23b 100644
--- a/acp/identity/identity.go
+++ b/acp/identity/identity.go
@@ -73,7 +73,7 @@ func didFromPublicKey(publicKey *secp256k1.PublicKey, producer didProducer) (str
 	bytes := publicKey.SerializeUncompressed()
 	did, err := producer(crypto.SECP256k1, bytes)
 	if err != nil {
-		return "", NewErrDIDCreation(err, "secp256k1", bytes)
+		return "", newErrDIDCreation(err, "secp256k1", bytes)
 	}
 	return did.String(), nil
 }