This study examines the extent to which the Basque ergative -k marker is undergoing change in the Basque Autonomous Community. The inclusion of Standard Basque in the education system since 1982 has brought a significant generational change in the mode of language acquisition: older speakers had no formal education in Basque, whereas younger speakers were educated in the Basque immersion program. Contrary to popular belief, results provide no evidence of ergative loss in apparent time; rather, they are consistent with linguistic stabilization. We claim that the differences in social constraints of gender and language use among the younger group reflect social changes, in which mode of language acquisition is responsible for the social stabilization and further stratification of ergativity. We conclude by arguing that minoritized contexts undergoing language revitalization provide important implications for sociolinguistic change, whereby social changes are embraced in assessing linguistic change.