diff --git a/include/linux/damon.h b/include/linux/damon.h
index 836353c4ab9a..844b175120f0 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -836,7 +836,8 @@ struct damon_probe {
 /**
  * struct damon_attrs - Monitoring attributes for accuracy/overhead control.
  *
- * @sample_interval:		The time between access samplings.
+ * @sample_interval:		The time between access samplings.  Zero is
+ *				accepted.
  * @aggr_interval:		The time between monitor results aggregations.
  * @ops_update_interval:	The time between monitoring operations updates.
  * @intervals_goal:		Intervals auto-tuning goal.