diff --git a/src/Avalonia.Visuals/Media/HsvColor.cs b/src/Avalonia.Visuals/Media/HsvColor.cs
index 605d89346e..284dbc8d68 100644
--- a/src/Avalonia.Visuals/Media/HsvColor.cs
+++ b/src/Avalonia.Visuals/Media/HsvColor.cs
@@ -1,4 +1,9 @@
-using System;
+// Color conversion portions of this source file are adapted from the WinUI project. 
+// (https://github.com/microsoft/microsoft-ui-xaml) 
+// 
+// Licensed to The Avalonia Project under MIT License, courtesy of The .NET Foundation.
+
+using System;
 
 namespace Avalonia.Media
 {