This article wants to contribute to the emerging debate on decolonisation in Belgian universities by sketching the challenges posed by critical decolonial analyses and how these affect both academic institutions and the individuals working within them. In the first section, I provide an overview of the main critiques formulated by postcolonial, feminist, and critical race theorists on issues of difference and diversity in the academy. Starting with the critiques voiced towards discourses of “diversity” - which has become the dominant paradigm to address “difference” and inequality in education - I continue by discussing the analyses developed by postcolonial, feminist, and critical race scholars that may provide an answer for the persistence of the “institutional wall” which - despite firm commitments to diversity - forestalls any real change or inclusivity of “other” bodies, perspectives, and knowledges. In the second part of the article, I reflect on the dilemmas that arise for scholars driven by feminist and postcolonial perspectives, but who work within those same academic environments that actively thwart the realisation of the ideals put forward in these critical traditions. By reflecting on what can actually be done within this restraining environment, I make a distinction between tactics and strategies which - although not immediately able to completely subvert an entrenched legacy of institutional oppression and exclusion - may inspire further discussion and activism and may contribute to weakening the wall currently forestalling transformational change.