diff --git a/DiscordChatExporter.Gui/ViewModels/Framework/DialogScreen.cs b/DiscordChatExporter.Gui/ViewModels/Framework/DialogScreen.cs
index 0e103a6c..05f0cf1a 100644
--- a/DiscordChatExporter.Gui/ViewModels/Framework/DialogScreen.cs
+++ b/DiscordChatExporter.Gui/ViewModels/Framework/DialogScreen.cs
@@ -10,7 +10,7 @@ namespace DiscordChatExporter.Gui.ViewModels.Framework
 
         public event EventHandler? Closed;
 
-        public void Close(T dialogResult = default)
+        public void Close(T dialogResult = default!)
         {
             DialogResult = dialogResult!;
             Closed?.Invoke(this, EventArgs.Empty);