The distribution of the secondary masses for the sample of CP07. The upper panel shows the mass distribution obtained by these authors: either a power law (thick black line) or a Gaussian centred around 0.8 M_⊙ and with σ_M = 0.5   M_⊙ (thin dotted red line). The two distributions are in fact very smooth and compatible with a uniform distribution. The bottom panel shows the distributions which best fit the sample of CP07 as obtained in this paper, fitting the distribution of log f(m) instead of f(m). The resulting distributions are a truncated power law that increases with mass (thick black line) or a gaussian curve centred around 0.7 M_⊙ and with σ_M = 0.3   M_⊙ (thin dotted red line).