The multiplicity-class dependence of the width of the balance function in $\deta$ (a) and in $\dphi$ (b)in pp collisions at $\sqrt{s} = 7$ TeV. The results correspond to the intermediate transverse momentum region (i.e $2.0 < p_\mathrm{T,assoc} < 3.0 < p_\mathrm{T,trig} < 4.0$ GeV/$c$). The data points are compared with two versions of PYTHIA8 calculations.