Over the past 20 years, the South African higher education (HE) system has become increasingly regularised. All programmes offered at South African public universities have to be registered and accredited by the Department of Higher Education and Training (DHET); the Higher Education Quality Committee (HEQC) under the auspices of the Council on Higher Education (CHE); as well as the South African Qualifications Authority (SAQA). Such accreditation, registration and quality assurance is subject to a growing series of stringent regulatory frameworks that must be adhered to, chief amongst which are the "Higher Education Qualifications Sub-Framework" (HEQSF) and the "Classification of Educational Subject Matter" (CESM) manual and the later Addendum. Increased calls from both students and government for curriculum transformation and the decolonisation of HE require a critical review of the regulatory regime as one of the barriers to curriculum transformation at South African universities. The aim of this article is to present a conceptual analysis of the CESM and its regulatory context within a decolonial framework in order to show that the regulatory requirements for curricula have created a rigid and colonised conception of what universities may and may not teach. The CESM categories and their concomitant requirements have become the so-called invisible statues of colonisation based on narrow and morally decadent Western conceptions of academic disciplines in current university curricula.