Researches in different languages show that children in acquisition have difficulties in establishing coreference with deictic pronouns, reflecting a possible delay in the acquisition of pragmatic principles that constraint pronominal reference (Chien and Wexler, 1990, 2009; Grolla, 2006). Recent research suggests that co-speech gestures can function as pragmatic reinforcement, reinforcing implicit aspects of meaning (Schlenker, 2018). In the present research, it is investigated whether, in the acquisition of Brazilian Portuguese, these gestures alleviate difficulties of pronominal coreference, violation of Principle B. Two experimental studies, truth value judgment tasks, were carried out with children (target group – 10 participants) and adults (control group – 10 participants). In both experiments, the experimental stimuli were composed of coordinated sentences, presented orally, with the target pronoun (null or full) in the second clause object position and two possible antecedents: one in the second clause subject position (local antecedent) and the other in the first clause object position (non-local antecedent). In the first experiment, there was no co-speech gesture, both pronouns and antecedents were presented orally only. In the second experiment, co-speech gestures (manual pointing for spatial location of the referent (spatial-loci) were added to pronouns and possible antecedents were accompanie. Obtained results indicate that: (a) in structural contexts involving null pronouns, there is no significant difference between target and control groups, both reject local coreference – without violating Principle B; (b) in structural contexts involving full pronouns, there was a significant difference between the target and control groups, with greater acceptance of local coreference in the target group - violation of Principle B. However, in the second experiment, there was no significant difference between the two groups. We conclude, therefore, that, during acquisition, the co-speech gestures of spatial-loci is computed in pronominal coreference, neutralizing readings with coreference with local antecedents.