From 012855475e38d1a05df6263f356e0d0805aa7237 Mon Sep 17 00:00:00 2001
From: FN <37689533+FireNameFN@users.noreply.github.com>
Date: Fri, 8 Nov 2024 09:59:05 +0700
Subject: [PATCH] Fix cursed mask bug (#33014)

* One line fix

* Removed redundant using

* Allocation improvement
---
 Content.Server/Clothing/Systems/CursedMaskSystem.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Content.Server/Clothing/Systems/CursedMaskSystem.cs b/Content.Server/Clothing/Systems/CursedMaskSystem.cs
index 825e85e2c6..86d4e801a8 100644
--- a/Content.Server/Clothing/Systems/CursedMaskSystem.cs
+++ b/Content.Server/Clothing/Systems/CursedMaskSystem.cs
@@ -51,7 +51,8 @@ public sealed class CursedMaskSystem : SharedCursedMaskSystem
         }
 
         var npcFaction = EnsureComp<NpcFactionMemberComponent>(wearer);
-        ent.Comp.OldFactions = npcFaction.Factions;
+        ent.Comp.OldFactions.Clear();
+        ent.Comp.OldFactions.UnionWith(npcFaction.Factions);
         _npcFaction.ClearFactions((wearer, npcFaction), false);
         _npcFaction.AddFaction((wearer, npcFaction), ent.Comp.CursedMaskFaction);
 
-- 
2.51.2