diff --git a/msg/sensor_baro.msg b/msg/sensor_baro.msg
index 9fe621f1c8..39b62a2305 100644
--- a/msg/sensor_baro.msg
+++ b/msg/sensor_baro.msg
@@ -2,3 +2,4 @@ float32 pressure
 float32 altitude
 float32 temperature
 uint64 error_count
+uint32 device_id	# Sensor ID that must be unique for each baro sensor and must not change