diff --git a/v2rayN/v2rayN/Mode/RoutingItem.cs b/v2rayN/v2rayN/Mode/RoutingItem.cs
index a033c227..544558ed 100644
--- a/v2rayN/v2rayN/Mode/RoutingItem.cs
+++ b/v2rayN/v2rayN/Mode/RoutingItem.cs
@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 
 namespace v2rayN.Mode
 {
+    [Serializable]
     public class RoutingItem
     {
         public string remarks