diff --git a/src/CredentialOptionsBuilder/ProfileBasedCreationOptionsBuilder.php b/src/CredentialOptionsBuilder/ProfileBasedCreationOptionsBuilder.php
index 679b225..4b462d5 100644
--- a/src/CredentialOptionsBuilder/ProfileBasedCreationOptionsBuilder.php
+++ b/src/CredentialOptionsBuilder/ProfileBasedCreationOptionsBuilder.php
@@ -97,9 +97,6 @@ private function getServerPublicKeyCredentialCreationOptionsRequest(
         string $content
     ): PublicKeyCredentialCreationOptionsRequest {
         $data = $this->serializer->deserialize($content, PublicKeyCredentialCreationOptionsRequest::class, 'json');
-        $data instanceof PublicKeyCredentialCreationOptionsRequest || throw new BadRequestHttpException(
-            'Invalid data'
-        );
         $errors = $this->validator->validate($data);
         if (count($errors) > 0) {
             $messages = [];
diff --git a/src/CredentialOptionsBuilder/ProfileBasedRequestOptionsBuilder.php b/src/CredentialOptionsBuilder/ProfileBasedRequestOptionsBuilder.php
index 8aca114..9a16629 100644
--- a/src/CredentialOptionsBuilder/ProfileBasedRequestOptionsBuilder.php
+++ b/src/CredentialOptionsBuilder/ProfileBasedRequestOptionsBuilder.php
@@ -82,9 +82,6 @@ private function getServerPublicKeyCredentialRequestOptionsRequest(
                 AbstractObjectNormalizer::DISABLE_TYPE_ENFORCEMENT => true,
             ]
         );
-        $data instanceof ServerPublicKeyCredentialRequestOptionsRequest || throw new BadRequestHttpException(
-            'Invalid data'
-        );
         $errors = $this->validator->validate($data);
         if (count($errors) > 0) {
             $messages = [];