Restore userID argument in attestation options

1 files changed, 2 insertions, 1 deletions

diff --git a/packages/browser/src/methods/startAttestation.ts b/packages/browser/src/methods/startAttestation.ts
index 9594bb9..0b2235d 100644
--- a/packages/browser/src/methods/startAttestation.ts
+++ b/packages/browser/src/methods/startAttestation.ts
@@ -4,6 +4,7 @@ import {
   AttestationCredentialJSON,
 } from '@simplewebauthn/typescript-types';
 
+import toUint8Array from '../helpers/toUint8Array';
 import bufferToBase64URLString from '../helpers/bufferToBase64URLString';
 import base64URLStringToBuffer from '../helpers/base64URLStringToBuffer';
 import supportsWebauthn from '../helpers/supportsWebauthn';
@@ -27,7 +28,7 @@ export default async function startAttestation(
     challenge: base64URLStringToBuffer(creationOptionsJSON.challenge),
     user: {
       ...creationOptionsJSON.user,
-      id: base64URLStringToBuffer(creationOptionsJSON.user.id),
+      id: toUint8Array(creationOptionsJSON.user.id),
     },
     excludeCredentials: creationOptionsJSON.excludeCredentials.map(toPublicKeyCredentialDescriptor),
   };