I agree, and I think on this case it would recommend betting a negative value and taking the other side of the bet, since the expected value is negative.

Quoting from https://en.wikipedia.org/wiki/Kelly_criterion: "If the edge is negative (b<q/p) the formula gives a negative result, indicating that the gambler should take the other side of the bet."

Take care, because the Kelly criterion for this game gives a negative value. which means you should not bet any of your wealth at this moment. :)