diff --git a/include/hardware/sensors.h b/include/hardware/sensors.h
index 6a3bbae8..caf0ea03 100644
--- a/include/hardware/sensors.h
+++ b/include/hardware/sensors.h
@@ -521,9 +521,10 @@ enum {
  *
  * A sensor of this type generates an event each time a tilt event is detected. A tilt event
  * should be generated if the direction of the 2-seconds window average gravity changed by at least
- * 35 degrees since the activation of the sensor.
+ * 35 degrees since the activation or the last trigger of the sensor.
  *     initial_estimated_gravity = average of accelerometer measurements over the first
- *                                 1 second after activation.
+ *                                 1 second after activation or the estimated gravity at the last
+ *                                 trigger.
  *     current_estimated_gravity = average of accelerometer measurements over the last 2 seconds.
  *     trigger when angle (initial_estimated_gravity, current_estimated_gravity) > 35 degrees
  *