diff --git a/osu.Game.Rulesets.Mania/UI/HitExplosion.cs b/osu.Game.Rulesets.Mania/UI/HitExplosion.cs
index c57833c623..168d6db20d 100644
--- a/osu.Game.Rulesets.Mania/UI/HitExplosion.cs
+++ b/osu.Game.Rulesets.Mania/UI/HitExplosion.cs
@@ -1,4 +1,7 @@
-using OpenTK;
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using OpenTK;
 using OpenTK.Graphics;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;