diff --git a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs
index 021fee2f..6b0d335d 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs
@@ -437,7 +437,7 @@ public partial class CoreConfigV2rayService
 
             FillDnsDomainsCustom(obj);
 
-            _coreConfig.dns = JsonUtils.Deserialize<Dns4Ray>(JsonUtils.Serialize(obj));
+            _coreConfig.dns = obj;
         }
         catch (Exception ex)
         {