diff --git a/example_test.go b/example_test.go
index 8fb9389..3d449d1 100644
--- a/example_test.go
+++ b/example_test.go
@@ -267,6 +267,7 @@ func ExampleJob_nextRun() {
 		),
 	)
 
+	// NextRun is only available after the scheduler has been started.
 	s.Start()
 
 	nextRun, _ := j.NextRun()
@@ -286,6 +287,7 @@ func ExampleJob_nextRuns() {
 		),
 	)
 
+	// NextRuns is only available after the scheduler has been started.
 	s.Start()
 
 	nextRuns, _ := j.NextRuns(5)