The primary aim of this study was to investigate the dominant code of choice among the younger generationof urban Bidayuh undergraduates studying in a local tertiary institution. The Speech Accommodation Theorycontends that closer rapport and solidarity can be easily established if the speaker chooses a code that is mostpreferred by the recipient. The data were collected through questionnaires and audio recordings of 13 casualconversations. The key findings of this study indicated that the heritage Bidayuh dialects were hardly used.Instead, Sarawak Malay is the dominant code of choice among the younger generation of urban Bidayuhundergraduates across dialect group interactions.