diff --git a/index.bs b/index.bs
index ff283ed22..cc3aa2e54 100644
--- a/index.bs
+++ b/index.bs
@@ -2901,8 +2901,8 @@ value and terminate the operation.
     };
 
     dictionary PublicKeyCredentialDescriptorJSON {
-        required Base64URLString        id;
         required DOMString              type;
+        required Base64URLString        id;
         sequence<DOMString>             transports;
     };