diff --git a/stats/view/worker.go b/stats/view/worker.go
index fef7bf513..9255d27d2 100644
--- a/stats/view/worker.go
+++ b/stats/view/worker.go
@@ -116,8 +116,12 @@ func record(tags *tag.Map, ms interface{}) {
 }
 
 // SetReportingPeriod sets the interval between reporting aggregated views in
-// the program. If duration is less than or
-// equal to zero, it enables the default behavior.
+// the program. If duration is less than or equal to zero, it enables the
+// default behavior.
+//
+// Note: each exporter makes different promises about what the lowest supported
+// duration is. For example, the Stackdriver exporter recommends a value no
+// lower than 1 minute. Consult each exporter per your needs.
 func SetReportingPeriod(d time.Duration) {
 	// TODO(acetechnologist): ensure that the duration d is more than a certain
 	// value. e.g. 1s