Historically, Northern Ireland’s peace walls were built to ensure civility between nationalist (Catholic) and loyalist (Protestant) regions of the country. In recent years however, they are viewed as counterproductive to future peace developments. As a result, there is a growing desire to remove the walls, but in the context of Brexit is there still a need for them? This article will examine how the re-emergence of overt interest in an united Ireland may have reframed the role of the peace walls in Northern Ireland.