diff --git a/scnserver/push/firebase.go b/scnserver/push/firebase.go
index dc4c973..fc72ca5 100644
--- a/scnserver/push/firebase.go
+++ b/scnserver/push/firebase.go
@@ -65,6 +65,7 @@ func (fb FirebaseConnector) SendNotification(ctx context.Context, user models.Us
 			"notification": gin.H{
 				"title": msg.Title,
 				"body":  msg.ShortContent(),
+				"sound": "default"
 			},
 			"apns": gin.H{},
 		}