diff --git a/thermo_sensor/thermo_sensor.ino b/thermo_sensor/thermo_sensor.ino
index 17dc9db..aefa276 100644
--- a/thermo_sensor/thermo_sensor.ino
+++ b/thermo_sensor/thermo_sensor.ino
@@ -60,7 +60,7 @@ void ReadAndSend()
 	Convert(h, h_str);
 	Convert(t, t_str);
 
-	int len = snprintf(payload, sizeof(payload), "{\"t\":%s,\"h\":%s,\"id\":\"%s\"}", t_str, h_str, id);
+	int len = snprintf(payload, sizeof(payload), "{\"t\":%s,\"h\":%s,\"id\":\"%s\",\"ip\":\"%s\"}", t_str, h_str, id, WiFi.localIP().toString().c_str());
 	Serial.print("Sending payload:\n");
 	Serial.println(payload);