From 795051e25699fa9d4b3c9f6f1df73ef9db92358d Mon Sep 17 00:00:00 2001
From: Craftplacer <craftplacer@outlook.de>
Date: Wed, 22 Jan 2020 00:29:12 +0100
Subject: [PATCH] Prevent channel duplicates

---
 osu.Game/Online/Chat/MessageNotifier.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/osu.Game/Online/Chat/MessageNotifier.cs b/osu.Game/Online/Chat/MessageNotifier.cs
index 9819754b85..c2ea94a279 100644
--- a/osu.Game/Online/Chat/MessageNotifier.cs
+++ b/osu.Game/Online/Chat/MessageNotifier.cs
@@ -79,7 +79,7 @@ namespace osu.Game.Online.Chat
         /// </remarks>
         public void HandleMessages(long channelId, IEnumerable<Message> messages)
         {
-            var channel = channelManager.JoinedChannels.FirstOrDefault(c => c.Id == channelId);
+            var channel = channelManager.JoinedChannels.SingleOrDefault(c => c.Id == channelId);
 
             if (channel == null)
             {