diff --git a/ArchiSteamFarm/Steam/Storage/BotConfig.cs b/ArchiSteamFarm/Steam/Storage/BotConfig.cs
index 8284fed6e0587..a7805b8625e03 100644
--- a/ArchiSteamFarm/Steam/Storage/BotConfig.cs
+++ b/ArchiSteamFarm/Steam/Storage/BotConfig.cs
@@ -510,7 +510,7 @@ public static async Task<bool> Write(string filePath, BotConfig botConfig) {
 			return (false, Strings.FormatErrorConfigPropertyInvalid(nameof(TradingPreferences), TradingPreferences));
 		}
 
-		return !Enum.IsDefined(UserInterfaceMode) ? (false, Strings.FormatErrorConfigPropertyInvalid(nameof(UserInterfaceMode), UserInterfaceMode)) : (true, null);
+		return (UserInterfaceMode < EUIMode.VGUI) || !Enum.IsDefined(UserInterfaceMode) ? (false, Strings.FormatErrorConfigPropertyInvalid(nameof(UserInterfaceMode), UserInterfaceMode)) : (true, null);
 	}
 
 	internal async Task<string?> GetDecryptedSteamPassword() {