In this paper, we prove the hyperstability of the following mixed additive-quadratic-Jensen functional equation
$$2f({{x + y} \over 2}) + f({{x - y} \over 2}) + f({{y - x} \over 2}) = f(x) + f(y)$$
in the class of functions from an 2-divisible abelian group G into a Banach space.