  We give the complete $O(p^2)$ bosonization of the electroweak Penguin
operators $Q_{7,8}$ and compare the result with that of the gluon Penguin
operators $Q_{5,6}$. We find that, in addition to the usual (constant and
current-current) parts, there are three new terms not discussed previously in
the literature. Two of these are present in the factorization approximation and
should be included in the standard definition of the $B_{7,8}$-factors. The
impact of these corrections on the direct $CP$-violating parameter $\varepsilon
'/\varepsilon$ is briefly discussed.
