diff --git a/src/modules/sensors/temperature_compensation.h b/src/modules/sensors/temperature_compensation.h
index 9cd2aa13bd..b6005848e2 100644
--- a/src/modules/sensors/temperature_compensation.h
+++ b/src/modules/sensors/temperature_compensation.h
@@ -65,7 +65,7 @@ public:
 
 	/** supply information which device_id matches a specific uORB topic_instance
 	 *  (needed if a system has multiple sensors of the same type)
-	 *  @return 0 on success, <0 otherwise */
+	 *  @return index for compensation parameter entry containing matching device ID on success, <0 otherwise */
 	int set_sensor_id_gyro(uint32_t device_id, int topic_instance);
 	int set_sensor_id_accel(uint32_t device_id, int topic_instance);
 	int set_sensor_id_baro(uint32_t device_id, int topic_instance);