diff --git a/owlcms/src/main/java/app/owlcms/monitors/MQTTMonitor.java b/owlcms/src/main/java/app/owlcms/monitors/MQTTMonitor.java
index 78981b613..bb7efe739 100644
--- a/owlcms/src/main/java/app/owlcms/monitors/MQTTMonitor.java
+++ b/owlcms/src/main/java/app/owlcms/monitors/MQTTMonitor.java
@@ -375,6 +375,7 @@ public void publishStartAthleteTimer(UIEvent.StartTime e) {
 				payload.put("athleteName", currentAthlete.getFullName());
 				payload.put("liftType", liftType.toString());
 				payload.put("attemptNumber", attemptNumber);
+				payload.put("session",getFop().getGroup().getName());
 
 				String json;
 				try {