This article deals with the acquisition of Brazilian Portuguese as an additional language by Haitian immigrants, more specifically with regard to the perception of liquid consonants / l / and / r / in the intervocalic position, in forms such as pala, mala, Sara. A total of 14 resident Haitian immigrants, at the time of the survey, in the city of Pato Branco-PR, with a mean age of 30.07 (SD = 4.98), were all male. The discussion of the data is based on the theoretical assumptions of the Phonological Acquisition of L2 (FLEGE, 1995; BEST, TYLER, 2007) and the results show a tendency towards the assimilation process, ie without the separate categorization of / l / and / R / . There is also a positive effect of the course time and the fact that the informant resides here with his Haitian family, with better performance for those who attend longer courses and reside here with their family.