C# Mysql Does not update

The Error:

 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Default=0 WHERE Default=1 AND UserID=3' at line 1

For some reason its not working i don't really see an error with this code.

Am trying to update database to set the default 0 if its 1 by the userid as you can see

Thank you very much.

try
{
    using (
        MySqlCommand cmd =
            new MySqlCommand("UPDATE user_inventory SET Default=0 WHERE Default=1 AND UserID=@oid",
                MysqlHandler.DbConnection))
    {
            cmd.Parameters.AddWithValue("@oid", user.UserId);
            cmd.Prepare();
            cmd.ExecuteNonQuery();
    }
}
catch (Exception e)
{
    Console.WriteLine(e.ToString());
}