  Hedden defined two knots in each lens space that, through analogies with
their knot Floer homology and doubly pointed Heegaard diagrams of genus one,
may be viewed as generalizations of the two trefoils in S^3. Rasmussen shows
that when the `left-handed' one is in the homology class of the dual to a Berge
knot of type VII, it admits an L-space homology sphere surgery. In this note we
give a simple proof that these L-space homology spheres are always the
Poincar\'e homology sphere.
