diff --git a/src/Denormalizer/AuthenticatorResponseDenormalizer.php b/src/Denormalizer/AuthenticatorResponseDenormalizer.php
index 4421520..06c8fbe 100644
--- a/src/Denormalizer/AuthenticatorResponseDenormalizer.php
+++ b/src/Denormalizer/AuthenticatorResponseDenormalizer.php
@@ -25,7 +25,7 @@ public function denormalize(mixed $data, string $type, string $format = null, ar
         }
 
         $realType = match (true) {
-            ! array_key_exists('authenticatorData', $data) && ! array_key_exists(
+            array_key_exists('attestationObject', $data) && ! array_key_exists(
                 'signature',
                 $data
             ) => AuthenticatorAttestationResponse::class,