diff --git a/ArchiSteamFarm/ArchiWebHandler.cs b/ArchiSteamFarm/ArchiWebHandler.cs
index 1c03d2833..35e696f7e 100644
--- a/ArchiSteamFarm/ArchiWebHandler.cs
+++ b/ArchiSteamFarm/ArchiWebHandler.cs
@@ -46,6 +46,10 @@ namespace ArchiSteamFarm {
 		}
 
 		internal ArchiWebHandler(Bot bot) {
+			if (bot == null) {
+				return;
+			}
+
 			Bot = bot;
 		}
 
diff --git a/ArchiSteamFarm/CardsFarmer.cs b/ArchiSteamFarm/CardsFarmer.cs
index a5943138e..dd2ef6ede 100755
--- a/ArchiSteamFarm/CardsFarmer.cs
+++ b/ArchiSteamFarm/CardsFarmer.cs
@@ -47,14 +47,18 @@ namespace ArchiSteamFarm {
 		private bool NowFarming = false;
 
 		internal CardsFarmer(Bot bot) {
+			if (bot == null) {
+				return;
+			}
+
 			Bot = bot;
 
-			if (Timer == null) {
+			if (Program.GlobalConfig.FarmingPeriod > 0 && Timer == null) {
 				Timer = new Timer(
 					async e => await CheckGamesForFarming().ConfigureAwait(false),
 					null,
-					TimeSpan.FromMinutes(15), // Delay
-					TimeSpan.FromMinutes(60) // Period
+					TimeSpan.FromHours(Program.GlobalConfig.FarmingPeriod), // Delay
+					TimeSpan.FromHours(Program.GlobalConfig.FarmingPeriod) // Period
 				);
 			}
 		}
diff --git a/ArchiSteamFarm/GlobalConfig.cs b/ArchiSteamFarm/GlobalConfig.cs
index 67a8f4254..596fe8b31 100644
--- a/ArchiSteamFarm/GlobalConfig.cs
+++ b/ArchiSteamFarm/GlobalConfig.cs
@@ -50,6 +50,9 @@ namespace ArchiSteamFarm {
 		[JsonProperty(Required = Required.DisallowNull)]
 		internal byte MaxFarmingTime { get; private set; } = 10;
 
+		[JsonProperty(Required = Required.DisallowNull)]
+		internal byte FarmingPeriod { get; private set; } = 3;
+
 		[JsonProperty(Required = Required.DisallowNull)]
 		internal byte FarmingDelay { get; private set; } = 5;
 
diff --git a/ArchiSteamFarm/Trading.cs b/ArchiSteamFarm/Trading.cs
index 93e824d27..8ba5ed879 100644
--- a/ArchiSteamFarm/Trading.cs
+++ b/ArchiSteamFarm/Trading.cs
@@ -46,6 +46,10 @@ namespace ArchiSteamFarm {
 		}
 
 		internal Trading(Bot bot) {
+			if (bot == null) {
+				return;
+			}
+
 			Bot = bot;
 		}