diff --git a/src/matrix-send-message.js b/src/matrix-send-message.js
index 7e9962d..12d0dd6 100644
--- a/src/matrix-send-message.js
+++ b/src/matrix-send-message.js
@@ -122,6 +122,7 @@ module.exports = function(RED) {
             }
 
             if (msgType === 'm.live') {
+                msg.topic = "org.matrix.msc3672.beacon_info";
                 content.body = "Live location";
                 content.timeout= 3600000;
                 content.live = true;