# Majorana mass term

I see somewhere that we can add a Majorana mass term, $m\psi^Ti\sigma^2\psi+h.c.$, to a Weyl fermion Lagrangian, where $\psi$ is a two-component spinor. However, it seems that this term simply vanishes due to the anti-symmetry of $i\sigma^2$. Did I miss anything here?