diff --git a/ArchiSteamFarm/Bot.cs b/ArchiSteamFarm/Bot.cs
index dc815f045..40b8c65f4 100755
--- a/ArchiSteamFarm/Bot.cs
+++ b/ArchiSteamFarm/Bot.cs
@@ -1518,8 +1518,8 @@ namespace ArchiSteamFarm {
 					ASF.ArchiLogger.LogGenericWarning(string.Format(Strings.ErrorIsInvalid, nameof(name)));
 				}
 
-				if (invalid && !string.IsNullOrEmpty(key)) {
-					invalidKeys.Add(key!);
+				if (invalid && key != null) {
+					invalidKeys.Add(key);
 				}
 			}