diff --git a/play-services-fido/core/src/main/kotlin/org/microg/gms/fido/core/transport/screenlock/ScreenLockTransportHandler.kt b/play-services-fido/core/src/main/kotlin/org/microg/gms/fido/core/transport/screenlock/ScreenLockTransportHandler.kt
index 64300b7076..acd3aa72c9 100644
--- a/play-services-fido/core/src/main/kotlin/org/microg/gms/fido/core/transport/screenlock/ScreenLockTransportHandler.kt
+++ b/play-services-fido/core/src/main/kotlin/org/microg/gms/fido/core/transport/screenlock/ScreenLockTransportHandler.kt
@@ -113,6 +113,7 @@ class ScreenLockTransportHandler(private val activity: FragmentActivity, callbac
     ): AuthenticatorResponseWithUser<AuthenticatorAttestationResponse> {
         if (options.type != RequestOptionsType.REGISTER) throw RequestHandlingException(ErrorCode.INVALID_STATE_ERR)
         val knownRegistrationInfo = database.getKnownRegistrationInfo(options.rpId)
+            .filter { it.transport == Transport.SCREEN_LOCK }
         for (descriptor in options.registerOptions.excludeList.orEmpty()) {
             val credentialBase64 = descriptor.id.toBase64(Base64.NO_WRAP or Base64.NO_PADDING or Base64.URL_SAFE)
             val excluded = knownRegistrationInfo.any { it.credential == credentialBase64 }