diff --git a/src/WinUI/ArcGIS.WinUI.Viewer/Samples/Layers/ChangeSublayerVisibility/ChangeSublayerVisibility.xaml.cs b/src/WinUI/ArcGIS.WinUI.Viewer/Samples/Layers/ChangeSublayerVisibility/ChangeSublayerVisibility.xaml.cs
index bee70e7f4e..35af7ca02c 100644
--- a/src/WinUI/ArcGIS.WinUI.Viewer/Samples/Layers/ChangeSublayerVisibility/ChangeSublayerVisibility.xaml.cs
+++ b/src/WinUI/ArcGIS.WinUI.Viewer/Samples/Layers/ChangeSublayerVisibility/ChangeSublayerVisibility.xaml.cs
@@ -98,6 +98,7 @@ private async void OnSublayersButtonClicked(object sender, RoutedEventArgs e)
                 dialog.PrimaryButtonClick += (s, a) => dialog.Hide();
 
                 // Show dialog as a full screen overlay.
+                dialog.XamlRoot = this.XamlRoot;
                 await dialog.ShowAsync();
             }
             catch (Exception ex)