diff --git a/src/modules/launcher/Plugins/Microsoft.Plugin.WindowWalker/Components/OpenWindows.cs b/src/modules/launcher/Plugins/Microsoft.Plugin.WindowWalker/Components/OpenWindows.cs
index 0d4220dae9..d89bb200a2 100644
--- a/src/modules/launcher/Plugins/Microsoft.Plugin.WindowWalker/Components/OpenWindows.cs
+++ b/src/modules/launcher/Plugins/Microsoft.Plugin.WindowWalker/Components/OpenWindows.cs
@@ -40,7 +40,7 @@ namespace Microsoft.Plugin.WindowWalker.Components
         /// <summary>
         /// Gets the list of all open windows
         /// </summary>
-        internal List<Window> Windows => windows;
+        internal List<Window> Windows => new List<Window>(windows);
 
         /// <summary>
         /// Gets an instance property of this class that makes sure that