diff --git a/osu.Game.Tests/Visual/TestCaseExternalLinkButton.cs b/osu.Game.Tests/Visual/TestCaseExternalLinkButton.cs
index bdb077ce5a..7d8535f428 100644
--- a/osu.Game.Tests/Visual/TestCaseExternalLinkButton.cs
+++ b/osu.Game.Tests/Visual/TestCaseExternalLinkButton.cs
@@ -1,4 +1,7 @@
-using System;
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
 using System.Collections.Generic;
 using osu.Game.Graphics.UserInterface;
 using OpenTK;
diff --git a/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs b/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs
index 800f77f547..025874a1a2 100644
--- a/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs
+++ b/osu.Game/Graphics/UserInterface/ExternalLinkButton.cs
@@ -1,4 +1,7 @@
-using System.Diagnostics;
+// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System.Diagnostics;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;