--- a/mod_http_oauth2/mod_http_oauth2.lua	Sat Apr 29 13:23:30 2023 +0200
+++ b/mod_http_oauth2/mod_http_oauth2.lua	Sat Apr 29 13:26:33 2023 +0200
@@ -953,6 +953,7 @@
 
 				-- OpenID
 				userinfo_endpoint = handle_register_request and module:http_url() .. "/userinfo" or nil;
+				require_request_uri_registration = true;
 			};
 		};
 	};