diff --git a/NetTally/MainWindow.xaml.cs b/NetTally/MainWindow.xaml.cs
index 9cdfe19f..f5f03cc5 100644
--- a/NetTally/MainWindow.xaml.cs
+++ b/NetTally/MainWindow.xaml.cs
@@ -149,7 +149,11 @@ private async void tallyButton_Click(object sender, RoutedEventArgs e)
             }
         }
 
-
+        /// <summary>
+        /// Cancel the cancellation token, if present.
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
         private void cancelTally_Click(object sender, RoutedEventArgs e)
         {
             cts?.Cancel();