diff --git a/main.js b/main.js
index 7661926..9b206cc 100644
--- a/main.js
+++ b/main.js
@@ -405,7 +405,7 @@ client.login("m.login.password", {"user": settings.matrixuser, "password": setti
                 client.sendReadReceipt(event, {});
             });
         } else {
-            client.getRoomTags(room.roomId).then((response) => {
+            client.getRoomTags(event.getRoomId()).then((response) => {
                 if (typeof response.tags["com.netsyms.matrix-bridge-voxtelesys.sms"] != "undefined") {
                     sendSMS(
                             response.tags["com.netsyms.matrix-bridge-voxtelesys.sms"].tel,