Purpose -T he purpose of this article is to investigate the effectiveness of an International Federation of Accountants (IFAC)-aligned business ethics course in relation to its ability to positively influence the ethical sensitivity of accounting students. Design/methodology/approach -U sing aq uantitative,q uasi-experimentald esign, senior accounting students were subjected to ap re-and post-test, measuring ethical sensitivity, with an IFAC-aligned business ethics course as the intervention. Multivariate analysis also focused on the interrelation of demographic characteristics with ethical sensitivity. Findings -T he resultsindicatethatthe business ethics course wasindeedeffective in increasing the ethicalsensitivity of accounting students.Students' demographiccharacteristics, in termsofaccounting specialisation area andyears of work experience,did play aroleinthe extent of theirchanges in ethical sensitivity. However, gender andp reviouse thicse ducation as influencing factor in ethicals ensitivity wasnegated.Research limitations/implications -T he studyfocused on thefirstcomponent (ethical sensitivity) of Rest's four-component modelthatpredictsethical behaviour. Additional research is thereforeneeded into theother components in Rest's modeland theirrespectiveinterrelations. Thecurrent studyalsoused asmall conveniencesampleratherthanone that wasrandomlyselected. Thefindings in this studydo, however, addtothe limitedbodyofevidenceonethical sensitivityinaccountingeducation world-wide. Practical implications -T he results can assist accounting professional bodies, associated higher education institutions and accounting firms in implementing specific educational interventions to develop greater ethical sensitivity in prospective and currentaccountants. Originality/value -T he audit failures at the start of this century placed ar enewed focus on the ethical behaviour of accountants. Consequently, ethics training was included in the curriculum of aspiring accountants. The research that informed this article attempted to gauge the effectivenessof this response, given the current knowledge gap, specifically in the South African context. Professional accounting bodies, associated higher education institutions and accounting firms could use the curriculum design presented in this study to implement as imilar intervention. Such interventions could enhance the ethical behaviour of both prospective and current accountants, and this, in turn, should aid in lessening ethical crises, thus protecting the social stature of the accounting profession.