diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..25bcc1c
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module b612.me/startimer
+
+go 1.20
diff --git a/time_test.go b/time_test.go
index dd158a5..eb144d8 100644
--- a/time_test.go
+++ b/time_test.go
@@ -216,3 +216,25 @@ func TestPrepareCron2(t *testing.T) {
 		fmt.Println(base)
 	}
 }
+
+func TestRun(t *testing.T) {
+	now := time.Now().Add(time.Second * 2)
+	tmr := NewTimer(time.Now(), WithStaticDate(now), WithRunCountLimit(1))
+	c := make(chan int)
+	tmr.AddTask(func() {
+		fmt.Println("hello world")
+		c <- 1
+	})
+	if err := tmr.Run(); err != nil {
+		t.Fatal(err)
+	}
+	fmt.Println(tmr.IsRunning())
+	select {
+	case <-c:
+		fmt.Println(tmr.IsRunning())
+		return
+	case <-time.After(time.Second * 10):
+		fmt.Println(tmr.IsRunning())
+		t.FailNow()
+	}
+}
diff --git a/timer.go b/timer.go
index 15b52f1..168458b 100644
--- a/timer.go
+++ b/timer.go
@@ -174,7 +174,7 @@ func (t *StarTimer) Run() error {
 	t.stopCtx, t.stopFn = context.WithCancel(context.Background())
 	go func() {
 		for {
-			if t.runCount+1 >= t.runLimit {
+			if t.runLimit > 0 && t.runCount >= t.runLimit {
 				t.Stop()
 			}
 			now := time.Now()
@@ -185,7 +185,7 @@ func (t *StarTimer) Run() error {
 			case <-t.timer.C:
 				t.runCount++
 				t.nextDate = t.parseNextDate(t.nextDate, false)
-				if t.nextDate.Before(now) {
+				if t.nextDate.Before(now) || t.runLimit > 0 && t.runCount >= t.runLimit {
 					t.Stop()
 				}
 				for _, fn := range t.tasks {