In São Tomé and Príncipe, the language shift toward Portuguese is resulting in the endangerment of the native creoles of the island. These languages have been considered of low value in Santomean society since the mid-twentieth century. But when Santomeans are members of a diaspora, their perceptions of these languages, especially Forro, change in terms of value and identity-marking. It is possible to observe such changes among the Santomeans who learn Forro when they are abroad, who use it as an in-group code, and start to value it more. In this article, I address the role of language contact in the maintenance and expansion of Forro. I investigate the mechanisms of language maintenance by focusing on the shifts in community members' attitudes and beliefs regarding their languages, as a result of contact. The changing attitudes and beliefs have led to a redefinition of the role of Forro in the speech community. This qualitative study is based on semistructured interviews conducted on São Tomé Island and in Portugal. Findings suggest that the change in value attributed to Forro by Santomeans as a result of contact contribute to the valorization of the language.