diff --git a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs
index 859953bcd..fa9a995c7 100644
--- a/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs
+++ b/ArchiSteamFarm.OfficialPlugins.ItemsMatcher/RemoteCommunication.cs
@@ -1013,7 +1013,7 @@ internal sealed class RemoteCommunication : IAsyncDisposable, IDisposable {
 
 			Dictionary<(uint RealAppID, Asset.EType Type, Asset.ERarity Rarity), HashSet<ulong>> databaseSets = setPartsResponse.Content.Result.GroupBy(static setPart => (setPart.RealAppID, setPart.Type, setPart.Rarity)).ToDictionary(static group => group.Key, static group => group.Select(static setPart => setPart.ClassID).ToHashSet());
 
-			HashSet<(ulong ClassID, uint Amount)> setCopy = [];
+			Dictionary<ulong, uint> setCopy = [];
 
 			foreach (((uint RealAppID, Asset.EType Type, Asset.ERarity Rarity) key, Dictionary<ulong, uint> set) in setsState) {
 				uint minimumAmount = uint.MaxValue;
@@ -1057,7 +1057,7 @@ internal sealed class RemoteCommunication : IAsyncDisposable, IDisposable {
 				setCopy.Clear();
 
 				foreach ((ulong classID, uint amount) in set) {
-					setCopy.Add((classID, amount));
+					setCopy[classID] = amount;
 				}
 
 				foreach ((ulong classID, uint amount) in setCopy) {