diff --git a/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs b/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs
index a8ee9beca5..1b381e7c98 100644
--- a/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs
+++ b/osu.Game/Online/API/ModSettingsDictionaryFormatter.cs
@@ -1,3 +1,6 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
 using System;
 using System.Collections.Generic;
 using MessagePack;