  We match the elliptic genus of a Berglund-H\"ubsch model with the supertrace
of $y^{J[0]}q^{L[0]}$ on a vertex algebra $V_{{\bf 1}, {\bf 1}}$. We show that
it is a weak Jacobi form and the elliptic genus of one theory is equal to (up
to a sign) the elliptic genus of its mirror.
