Great pedal with a great flaw - no polarity switch

I've bought this hoping it would be a great pedal because that's what most reviews say about it. However if by any chance your keyboard inverts the signal this will be useless due to its great flaw - no polarity reversal switch, it would be a great touch to add to it. Don't get me wrong it has a great built for its price if when connected the polarity is not reversed.