diff --git a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
index 3a113722..39d6e68a 100644
--- a/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/AddServerWindow.axaml.cs
@@ -78,8 +78,7 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>
                 gridHysteria2.IsVisible = true;
                 sepa2.IsVisible = false;
                 gridTransport.IsVisible = false;
-                //cmbCoreType.IsEnabled = false;
-                cmbCoreType.ItemsSource = Global.Hysteria2CoreTypes;
+                cmbCoreType.ItemsSource = Global.Hysteria2CoreTypes.AppendEmpty();
                 cmbFingerprint.IsEnabled = false;
                 cmbFingerprint.SelectedValue = string.Empty;
                 break;
@@ -88,8 +87,7 @@ public partial class AddServerWindow : WindowBase<AddServerViewModel>
                 gridTuic.IsVisible = true;
                 sepa2.IsVisible = false;
                 gridTransport.IsVisible = false;
-                //cmbCoreType.IsEnabled = false;
-                cmbCoreType.ItemsSource = Global.TuicCoreTypes;
+                cmbCoreType.ItemsSource = Global.TuicCoreTypes.AppendEmpty();
                 cmbFingerprint.IsEnabled = false;
                 cmbFingerprint.SelectedValue = string.Empty;
 
diff --git a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
index 664a47bf..0e90ce0c 100644
--- a/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/AddServerWindow.xaml.cs
@@ -72,8 +72,7 @@ public partial class AddServerWindow
                 gridHysteria2.Visibility = Visibility.Visible;
                 sepa2.Visibility = Visibility.Collapsed;
                 gridTransport.Visibility = Visibility.Collapsed;
-                //cmbCoreType.IsEnabled = false;
-                cmbCoreType.ItemsSource = Global.Hysteria2CoreTypes;
+                cmbCoreType.ItemsSource = Global.Hysteria2CoreTypes.AppendEmpty();
                 cmbFingerprint.IsEnabled = false;
                 cmbFingerprint.Text = string.Empty;
                 break;
@@ -82,8 +81,7 @@ public partial class AddServerWindow
                 gridTuic.Visibility = Visibility.Visible;
                 sepa2.Visibility = Visibility.Collapsed;
                 gridTransport.Visibility = Visibility.Collapsed;
-                //cmbCoreType.IsEnabled = false;
-                cmbCoreType.ItemsSource = Global.TuicCoreTypes;
+                cmbCoreType.ItemsSource = Global.TuicCoreTypes.AppendEmpty();
                 cmbFingerprint.IsEnabled = false;
                 cmbFingerprint.Text = string.Empty;