1 files changed, 8 insertions, 6 deletions
diff --git a/packages/browser/src/methods/startAssertion.ts b/packages/browser/src/methods/startAssertion.ts
index fbc6f59..e02e577 100644
--- a/packages/browser/src/methods/startAssertion.ts
+++ b/packages/browser/src/methods/startAssertion.ts
@@ -21,16 +21,18 @@ export default async function startAssertion(
     throw new Error('WebAuthn is not supported in this browser');
   }
 
+  // We need to avoid passing empty array to avoid blocking retrieval
+  // of public key
+  let allowCredentials;
+  if (requestOptionsJSON.allowCredentials?.length !== 0) {
+    allowCredentials = requestOptionsJSON.allowCredentials?.map(toPublicKeyCredentialDescriptor);
+  }
+
   // We need to convert some values to Uint8Arrays before passing the credentials to the navigator
   const publicKey: PublicKeyCredentialRequestOptions = {
     ...requestOptionsJSON,
     challenge: base64URLStringToBuffer(requestOptionsJSON.challenge),
-    // We need to avoid passing empty array to avoid blocking retrieval
-    // of public key
-    allowCredentials:
-      requestOptionsJSON.allowCredentials?.length === 0
-        ? undefined
-        : requestOptionsJSON.allowCredentials?.map(toPublicKeyCredentialDescriptor),
+    allowCredentials,
   };
 
   // Wait for the user to complete assertion