diff --git a/msg/versioned/ActuatorServos.msg b/msg/versioned/ActuatorServos.msg
index d2bf15d15f..a648b0a6ba 100644
--- a/msg/versioned/ActuatorServos.msg
+++ b/msg/versioned/ActuatorServos.msg
@@ -5,8 +5,8 @@
 
 uint32 MESSAGE_VERSION = 0
 
-uint64 timestamp # Time since system start [us]
-uint64 timestamp_sample # Sampling timestamp of the data this control response is based on [us]
+uint64 timestamp # [us] Time since system start.
+uint64 timestamp_sample # [us] Sampling timestamp of the data this control response is based on.
 
 uint8 NUM_CONTROLS = 8
 float32[8] control # [@range -1, 1] Normalized output. 1 means maximum positive position. -1 maximum negative position (if not supported by the output, <0 maps to NaN). NaN maps to disarmed.