diff --git a/ArchiSteamFarm/ArchiHandler.cs b/ArchiSteamFarm/ArchiHandler.cs
index e41a5f3d9..f5a60c440 100644
--- a/ArchiSteamFarm/ArchiHandler.cs
+++ b/ArchiSteamFarm/ArchiHandler.cs
@@ -41,7 +41,7 @@ namespace ArchiSteamFarm {
 
 		internal DateTime LastPacketReceived { get; private set; } = DateTime.MinValue;
 
-		internal ArchiHandler(ArchiLogger archiLogger) => ArchiLogger = archiLogger ?? throw new ArgumentNullException(nameof(archiLogger));		
+		internal ArchiHandler(ArchiLogger archiLogger) => ArchiLogger = archiLogger ?? throw new ArgumentNullException(nameof(archiLogger));
 
 		public override void HandleMsg(IPacketMsg packetMsg) {
 			if (packetMsg == null) {
diff --git a/ArchiSteamFarm/Bot.cs b/ArchiSteamFarm/Bot.cs
index 130c56272..211e15009 100755
--- a/ArchiSteamFarm/Bot.cs
+++ b/ArchiSteamFarm/Bot.cs
@@ -346,6 +346,7 @@ namespace ArchiSteamFarm {
 				return appID;
 			}
 
+			// ReSharper disable once LoopCanBePartlyConvertedToQuery - C# 7.0 out can't be used within LINQ query yet | https://github.com/dotnet/roslyn/issues/15619
 			foreach (Dictionary<uint, SteamApps.PICSProductInfoCallback.PICSProductInfo> productInfoApps in productInfoResultSet.Results.Select(result => result.Apps)) {
 				if (!productInfoApps.TryGetValue(appID, out SteamApps.PICSProductInfoCallback.PICSProductInfo productInfoApp)) {
 					continue;
@@ -841,7 +842,7 @@ namespace ArchiSteamFarm {
 				Task.Run(() => Stop()).Forget();
 			}
 
-			Bots.TryRemove(BotName, out Bot ignored);
+			Bots.TryRemove(BotName, out Bot _);
 		}
 
 		private void Disconnect() {
@@ -923,12 +924,12 @@ namespace ArchiSteamFarm {
 		private ulong GetFirstSteamMasterID() => BotConfig.SteamUserPermissions.Where(kv => (kv.Key != 0) && (kv.Key != SteamID) && (kv.Value == BotConfig.EPermission.Master)).Select(kv => kv.Key).OrderBy(steamID => steamID).FirstOrDefault();
 
 		private BotConfig.EPermission GetSteamUserPermission(ulong steamID) {
-			if (steamID == 0) {
-				ArchiLogger.LogNullError(nameof(steamID));
-				return BotConfig.EPermission.None;
+			if (steamID != 0) {
+				return BotConfig.SteamUserPermissions.TryGetValue(steamID, out BotConfig.EPermission permission) ? permission : BotConfig.EPermission.None;
 			}
 
-			return BotConfig.SteamUserPermissions.TryGetValue(steamID, out BotConfig.EPermission permission) ? permission : BotConfig.EPermission.None;
+			ArchiLogger.LogNullError(nameof(steamID));
+			return BotConfig.EPermission.None;
 		}
 
 		private void HandleCallbacks() {
diff --git a/ArchiSteamFarm/JSON/Steam.cs b/ArchiSteamFarm/JSON/Steam.cs
index c706f01d8..a41a840de 100644
--- a/ArchiSteamFarm/JSON/Steam.cs
+++ b/ArchiSteamFarm/JSON/Steam.cs
@@ -470,12 +470,12 @@ namespace ArchiSteamFarm.JSON {
 				}
 
 				// Ensure that amount of items to give is at least amount of items to receive (per game and per type)
-				foreach (KeyValuePair<uint, Dictionary<Item.EType, uint>> itemsPerGame in itemsToGivePerGame) {					
+				foreach (KeyValuePair<uint, Dictionary<Item.EType, uint>> itemsPerGame in itemsToGivePerGame) {
 					if (!itemsToReceivePerGame.TryGetValue(itemsPerGame.Key, out Dictionary<Item.EType, uint> otherItemsPerType)) {
 						return false;
 					}
 
-					foreach (KeyValuePair<Item.EType, uint> itemsPerType in itemsPerGame.Value) {						
+					foreach (KeyValuePair<Item.EType, uint> itemsPerType in itemsPerGame.Value) {
 						if (!otherItemsPerType.TryGetValue(itemsPerType.Key, out uint otherAmount)) {
 							return false;
 						}
diff --git a/ArchiSteamFarm/Trading.cs b/ArchiSteamFarm/Trading.cs
index c9eb126a6..91e84269c 100644
--- a/ArchiSteamFarm/Trading.cs
+++ b/ArchiSteamFarm/Trading.cs
@@ -43,7 +43,7 @@ namespace ArchiSteamFarm {
 
 		private bool ParsingScheduled;
 
-		internal Trading(Bot bot) => Bot = bot ?? throw new ArgumentNullException(nameof(bot));		
+		internal Trading(Bot bot) => Bot = bot ?? throw new ArgumentNullException(nameof(bot));
 
 		public void Dispose() => TradesSemaphore.Dispose();
 
diff --git a/ArchiSteamFarm/Utilities.cs b/ArchiSteamFarm/Utilities.cs
index a55d90801..83c39bf3f 100644
--- a/ArchiSteamFarm/Utilities.cs
+++ b/ArchiSteamFarm/Utilities.cs
@@ -97,7 +97,7 @@ namespace ArchiSteamFarm {
 			for (byte i = 0; i < text.Length; i += split) {
 				string textPart = string.Join("", text.Skip(i).Take(split));
 
-				if (!ulong.TryParse(textPart, NumberStyles.HexNumber, null, out ulong ignored)) {
+				if (!ulong.TryParse(textPart, NumberStyles.HexNumber, null, out ulong _)) {
 					return false;
 				}
 			}