diff --git a/osu.Game/Overlays/Chat/ChannelControl/ControlItemClose.cs b/osu.Game/Overlays/Chat/ChannelControl/ControlItemClose.cs
index 4730d7b72d..c0f419f619 100644
--- a/osu.Game/Overlays/Chat/ChannelControl/ControlItemClose.cs
+++ b/osu.Game/Overlays/Chat/ChannelControl/ControlItemClose.cs
@@ -1,6 +1,8 @@
 // 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.
 
+#nullable enable
+
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;