Aluminum-indium alloys are activated at a potential close to -1.1 V-SCE in chloride solutions, where a pH value of 3 is found inside an active aluminum pit. Under these conditions the effect exerted by In is still a matter of discussion. Therefore, the electrochemical behavior of In in chloride solutions at pH 3 in this potential region, was studied. The hydrogen evolution reaction and the effects of local alkalization, Cl- and the presence of surface oxide, were analyzed. Experiments carried out with both electrode rotation.and low Cl- concentrations show the presence of a cathodic current density (cd) plateau, this latter being attributed to a possible catalytic effect exerted by the oxide layer on the hydrogen evolution reaction. An increase of Cl- concentration generates a shift of the ed plateau towards lower cathodic ed values. The appearance of a rise in the anodic ed at a potential close to -1.1 V was followed by voltammetric studies. This process was found to be dependent of the Cl- concentration and to be controlled by mass transfer. These findings were explained in terms of a metal oxidation promoted by specific Cl- adsorption at a potential close to the pzc, giving rise to the formation of a surface salt film through which anions migrate.