Over the last decade, the Scottish Government have pursued a positive, highly visible immigration politics, despite Scotland lacking formal immigration powers and being enveloped within a United Kingdom that has simultaneously pursued an increasingly securitised approach. With securitisation intensifying globally, coupled with a rise in, and political success of, anti-immigration parties and actors, this article investigates the question of why the Scottish Government has pursued a desecuritising approach – a neglected strand of (de)securitisation studies that principally focuses on the how. We draw on insights from ontological security studies to investigate the Scottish Government’s desecuritisation activity between 2014 and 2024, demonstrating that, whilst there are rationalist-materialist explanations, desecuritisation was not inevitable. Instead, by exploring the relationship between immigration and the construction of the Scottish self at the ontological level we can more fully understand the drivers behind desecuritisation. Pursuing a desecuritised immigration politics is shown, first, to support the Scottish Government’s core autobiographical narrative about who ‘Scotland’ is (open, welcoming, and internationalist), and second, through nurturing a Lacanian fantasy, to be affectively rewarding. Last, the article contributes to the (re)conceptualisation of linearity and temporality in (de)securitisation studies, showcasing contemporary-orientated desecuritisation moves dovetailing with moves aimed at an institutional ‘future-proofing’ of desecuritised immigration governance.