diff --git a/quiche/blind_sign_auth/proto/attestation.proto b/quiche/blind_sign_auth/proto/attestation.proto
index cb3843d..3ad7108 100644
--- a/quiche/blind_sign_auth/proto/attestation.proto
+++ b/quiche/blind_sign_auth/proto/attestation.proto
@@ -42,10 +42,11 @@
   // Attestation data that is returned by the client.
   oneof attestation_data {
     AndroidAttestationData android_attestation_data = 1;
+
     IosAttestationData ios_attestation_data = 2;
   }
-  AttestationData attestation = 3;
 
+  AttestationData attestation = 3;
   string package_name = 4;
 
   // If attestation is AndroidAttestationData device models should be listed in: