diff --git a/QuestPDF.Previewer.Examples/Program.cs b/QuestPDF.Previewer.Examples/Program.cs
index fb2d971..7e218a8 100644
--- a/QuestPDF.Previewer.Examples/Program.cs
+++ b/QuestPDF.Previewer.Examples/Program.cs
@@ -7,9 +7,9 @@ using QuestPDF.ReportSample;
 using QuestPDF.ReportSample.Layouts;
 using Colors = QuestPDF.Helpers.Colors;
 
-// var model = DataSource.GetReport();
-// var report = new StandardReport(model);
-// report.ShowInPreviewer();
+var model = DataSource.GetReport();
+var report = new StandardReport(model);
+report.ShowInPreviewer();
 
 Document
     .Create(container =>
diff --git a/QuestPDF.Previewer/PreviewerWindow.axaml.cs b/QuestPDF.Previewer/PreviewerWindow.axaml.cs
index 27de11e..fa8a176 100644
--- a/QuestPDF.Previewer/PreviewerWindow.axaml.cs
+++ b/QuestPDF.Previewer/PreviewerWindow.axaml.cs
@@ -65,14 +65,16 @@ namespace QuestPDF.Previewer
             //     .Click += (_, _) => _ = PreviewerUtils.SavePdfWithDialog(Document, this);
 
             DocumentProperty.Changed.Subscribe(v => Task.Run(() => DocumentRenderer.UpdateDocument(v.NewValue.Value)));
-            HotReloadManager.UpdateApplicationRequested += (_, _) => InvalidatePreview();
+            HotReloadManager.UpdateApplicationRequested += InvalidatePreview;
         }
 
-        private void InitializeComponent()
+        protected override void OnClosed(EventArgs e)
         {
-            AvaloniaXamlLoader.Load(this);
+            HotReloadManager.UpdateApplicationRequested -= InvalidatePreview;
+            base.OnClosed(e);
         }
 
+        private void InvalidatePreview(object? sender, EventArgs e) => InvalidatePreview();
         private void InvalidatePreview()
         {
             Dispatcher.UIThread.Post(() =>
@@ -81,5 +83,10 @@ namespace QuestPDF.Previewer
                 _ = Task.Run(() => DocumentRenderer.UpdateDocument(document));
             });
         }
+
+        private void InitializeComponent()
+        {
+            AvaloniaXamlLoader.Load(this);
+        }
     }
 }