diff --git a/main.js b/main.js
index 2b6fb5d..04ade21 100644
--- a/main.js
+++ b/main.js
@@ -138,7 +138,7 @@ function createOrJoinSMSRoom(tel, ournumber, callback) {
             visibility: "private",
             invite: settings.inviteusers,
             name: formatPhoneNumber(tel, "(NNN) NNN-NNNN"),
-            topic: "SMS conversation with " + tel + " (using " + ournumber + ")"
+            topic: "SMS conversation with " + formatPhoneNumber(tel, "(NNN) NNN-NNNN") + " (using " + formatPhoneNumber(ournumber, "(NNN) NNN-NNNN") + ")"
         }).then((room) => {
             logger.debug("Room" + roomName + " created with ID " + room.room_id);