Incorrect block for helium

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Mmm... webelements.com mentions p-block... Do you know IUPAC recommendation about this?

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The WebElements data and property commentary seem to treat block solely as a function of group. Based on a more rigorous definition of an [X]-block as those elements whose highest-energy electron in elemental form is in an [X]-orbital, helium (1s^2) belongs in the s-block as the only exception to the group correlation.

The WebElements description for block does cite a IUPAC publication as a source for the description, but the site's copyright page acknowledges that "there are still plenty of errors" and it might have been mistranscribed. Most other web sources I've seen give s-block, but I haven't found any mention of a IUPAC recommendation other than that publication (Nomenclature of inorganic chemistry : recommendations 1990). I suppose I could trek to the UW chem library and look at it in person.

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I just some googling of site:iupac.org, but that only came up with:

http://www.iupac.org/publications/pac/2002/pdf/7405x0793.pdf

which puts Helium in the p-block (one of the figures), but mentions in the caption of that figure that it is based on the last filled shell, which seems to contradict the classification of Helium...