diff --git a/osu.Game/Graphics/UserInterface/FPSCounter.cs b/osu.Game/Graphics/UserInterface/FPSCounter.cs
index 162d2d2a57..91e0429c85 100644
--- a/osu.Game/Graphics/UserInterface/FPSCounter.cs
+++ b/osu.Game/Graphics/UserInterface/FPSCounter.cs
@@ -1,6 +1,7 @@
 // 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 osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;