diff --git a/osu.Game/Online/Chat/ChannelManager.cs b/osu.Game/Online/Chat/ChannelManager.cs
index 2c73535668..ca28161909 100644
--- a/osu.Game/Online/Chat/ChannelManager.cs
+++ b/osu.Game/Online/Chat/ChannelManager.cs
@@ -7,7 +7,6 @@ using System.Collections.ObjectModel;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Configuration;
-using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Logging;
 using osu.Framework.Threading;