diff --git a/app/routes/webauthn.py b/app/routes/webauthn.py
index 635c60e..699985a 100644
--- a/app/routes/webauthn.py
+++ b/app/routes/webauthn.py
@@ -36,7 +36,11 @@ from webauthn.helpers.structs import (
     UserVerificationRequirement,
     AuthenticatorAttachment,
 )
-from webauthn.helpers.exceptions import InvalidCBORData, InvalidAuthenticatorResponse
+from webauthn.helpers.exceptions import (
+    InvalidCBORData,
+    InvalidRegistrationResponse,
+    InvalidAuthenticationResponse,
+)
 from flask import Blueprint, request, jsonify, g, session, current_app
 
 from app import db, limiter, client_ip
@@ -142,7 +146,7 @@ def register_complete():
             expected_origin=_origins(),
             require_user_verification=False,
         )
-    except (InvalidCBORData, InvalidAuthenticatorResponse, Exception) as e:
+    except (InvalidCBORData, InvalidRegistrationResponse, Exception) as e:
         return jsonify({'error': f'Registration verification failed: {str(e)}'}), 400
 
     # Persist the new credential.
@@ -385,4 +389,4 @@ def delete_credential(cred_id):
         ip_address=client_ip(),
     )
     db.session.commit()
-    return jsonify({'message': 'Passkey removed'}), 200
+    return jsonify({'message': 'Passkey removed'}), 200
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