diff --git a/ArchiSteamFarm/Steam/Bot.cs b/ArchiSteamFarm/Steam/Bot.cs
index 18905fce2f055..6e113f488cc44 100644
--- a/ArchiSteamFarm/Steam/Bot.cs
+++ b/ArchiSteamFarm/Steam/Bot.cs
@@ -3796,7 +3796,7 @@ private void UpdateTokens(string accessToken, string? refreshToken = null) {
 				BotDatabase.AccessToken = ArchiCryptoHelper.Encrypt(BotConfig.PasswordFormat, accessToken);
 
 				if (!string.IsNullOrEmpty(refreshToken)) {
-					BotDatabase.RefreshToken = ArchiCryptoHelper.Encrypt(BotConfig.PasswordFormat, refreshToken);
+					BotDatabase.RefreshToken = ArchiCryptoHelper.Encrypt(BotConfig.PasswordFormat, refreshToken!);
 				}
 			} else {
 				BotDatabase.AccessToken = accessToken;