diff --git a/spec/index.bs b/spec/index.bs
index 7fa089b82..5b1d7a124 100644
--- a/spec/index.bs
+++ b/spec/index.bs
@@ -499,7 +499,7 @@ The response body must be a JSON object that can be [=converted to an IDL value|
 dictionary IdentityProviderAccount {
   required USVString id;
   required USVString name;
-  required USVString email;
+  USVString email;
   USVString given_name;
   USVString picture;
   sequence<USVString> approved_clients;