In dark blue, the observed mass spectrum from the WASP planet survey and the EBLM binaries released in this paper. The orange histogram depicts the results from Grether & Lineweaver (2006), normalised to the number of WASP and EBLM objects heavier than 1 M_Jup. The vertical grey lines denote the rough mass limits for deuterium burning (13 M_Jup) and hydrogen burning (80 M_Jup). There is an evident deficit of objects between these two limits, which corresponds to the realm of brown dwarfs.