diff --git a/routes/api/webauthn/register/[step].ts b/routes/api/webauthn/register/[step].ts
index b2a8ecd..7c996f1 100644
--- a/routes/api/webauthn/register/[step].ts
+++ b/routes/api/webauthn/register/[step].ts
@@ -54,7 +54,7 @@ export const handler: SessionHandlers = {
 
 			const options = await generateRegistrationOptions({
 				rpName: relyingParty.name,
-				rpID: relyingParty.id,
+				rpID: relyingParty.origin,
 				userName: user.login,
 				attestationType: 'none',
 				excludeCredentials,