Using a simple freely-jointed polymer model and Debye-Huckel description of the electrostatic interactions, we showed that the peculiarities of the overcharging taking place in interpolyelectrolyte complexes (IPECs) formed by polymers of different topologies correlate with those of the IPECs solubility. It allows to assume that drastic disappearance of a turbidity in IPEC solutions observed in turbidimetric titration experiments may be related with the presence of phase transition in the conformation of a lyophilizing linear polyelectrolyte. (C) 2016 Elsevier B.V. All rights reserved.