diff --git a/core/ssb.js b/core/ssb.js
index 3a4c5dd6..83b56f2c 100644
--- a/core/ssb.js
+++ b/core/ssb.js
@@ -239,6 +239,7 @@ ssb.addRpc(['tunnel', 'isRoom'], function(request) {
 function notify_attendant_changed(id, type) {
 	if (!id) {
 		print(`notify_attendant_changed called with id=${id}`);
+		return;
 	}
 	for (let r of Object.values(g_attendants)) {
 		try {