diff --git a/gorush/notification.go b/gorush/notification.go
index 821965b..7169f56 100644
--- a/gorush/notification.go
+++ b/gorush/notification.go
@@ -304,7 +304,8 @@ func GetIOSNotification(req PushNotification) *apns.Notification {
 
 	payload := payload.NewPayload().Alert(req.Message)
 
-	if req.Badge > 0 {
+	// zero value for clear the badge on the app icon.
+	if req.Badge >= 0 {
 		payload.Badge(req.Badge)
 	}
 
diff --git a/gorush/notification_test.go b/gorush/notification_test.go
index 9c4524f..efb2662 100644
--- a/gorush/notification_test.go
+++ b/gorush/notification_test.go
@@ -72,7 +72,7 @@ func TestIOSNotificationStructure(t *testing.T) {
 		Expiration:       time.Now().Unix(),
 		Priority:         "normal",
 		Message:          message,
-		Badge:            1,
+		Badge:            0,
 		Sound:            test,
 		ContentAvailable: true,
 		Data: D{
@@ -108,7 +108,7 @@ func TestIOSNotificationStructure(t *testing.T) {
 	assert.Equal(t, unix, notification.Expiration.Unix())
 	assert.Equal(t, ApnsPriorityLow, notification.Priority)
 	assert.Equal(t, message, alert)
-	assert.Equal(t, 1, int(badge))
+	assert.Equal(t, 0, int(badge))
 	assert.Equal(t, test, sound)
 	assert.Equal(t, 1, int(contentAvailable))
 	assert.Equal(t, "test", key1)