diff --git a/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs b/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
index 5ccc68f4..50c10150 100644
--- a/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
+++ b/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
@@ -650,7 +650,7 @@ namespace v2rayN.Handler
                     var normalDNS = item?.normalDNS;
                     if (string.IsNullOrWhiteSpace(normalDNS))
                     {
-                        return 0;
+                        normalDNS = "{\"servers\":[{\"address\":\"tls://8.8.8.8\"}]}";
                     }
 
                     var obj = Utils.ParseJson(normalDNS);
diff --git a/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs b/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs
index 8a8d452f..ea836079 100644
--- a/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs
+++ b/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs
@@ -689,7 +689,7 @@ namespace v2rayN.Handler
                 var domainStrategy4Freedom = item?.domainStrategy4Freedom;
                 if (string.IsNullOrWhiteSpace(normalDNS))
                 {
-                    return 0;
+                    normalDNS = "1.1.1.1,8.8.8.8";
                 }
 
                 //Outbound Freedom domainStrategy