diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 5ef52e7..e48147e 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -1,5 +1,6 @@
 using System.Drawing;
 using System.Drawing.Drawing2D;
+using System.Linq;
 using System.Runtime.InteropServices;
 using CodexBarWin.Models;
 using CodexBarWin.Services;
@@ -234,6 +235,15 @@ private void OnFrameNavigated(object sender, Microsoft.UI.Xaml.Navigation.Naviga
 
     private void OnSettingsRequested(object? sender, EventArgs e)
     {
+        // Check if settings window is already open
+        var existingWindow = App.Windows.OfType<SettingsWindow>().FirstOrDefault();
+        if (existingWindow != null)
+        {
+            existingWindow.Activate();
+            return;
+        }
+
+        // Create and show new settings window
         var settingsWindow = new SettingsWindow();
         settingsWindow.Activate();
     }