diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 07a73f9..d9d4654 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -123,11 +123,14 @@ public partial class MainWindow : Window
 
     private static void SetSliderValueFromClick(Slider slider, MouseButtonEventArgs e)
     {
+        if (e.OriginalSource is System.Windows.Controls.Primitives.Thumb)
+            return;
         var track = slider.Template.FindName("PART_Track", slider) as System.Windows.Controls.Primitives.Track;
         if (track == null) return;
         var pos = e.GetPosition(track);
         var fraction = Math.Clamp(pos.X / track.RenderSize.Width, 0, 1);
         slider.Value = slider.Minimum + fraction * (slider.Maximum - slider.Minimum);
+        e.Handled = true;
     }
 
     private void MicSpeaker_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)