diff --git a/msg/MotorRPM.msg b/msg/MotorRPM.msg
index ce838a7..ba5916b 100644
--- a/msg/MotorRPM.msg
+++ b/msg/MotorRPM.msg
@@ -1,2 +1,3 @@
 Header header
+time[] sample_stamp
 float32[] rpm