In 1898-1900, Léon Winiarski published his Mécanique sociale as an attempt to extend Walras's general equilibrium theory from the field of economics to the whole spectrum of the social sciences. This was done through an abundant use of analogies, including physical analogies. Given Walras's own physics envy, Winiarski felt encouraged by his elder to pursue his project in this way. This paper asks whether Winiarski's Mécanique sociale was an attempt to seriously take into account Walras's physics envy. To answer this question, we reconsider Winiarski's interpretation of Walras's general equilibrium theory, by focusing on a particular footnote found in Winiarski’s writings.