Amyotrophic lateral sclerosis (ALS) is an incurable neurodegenerative disease that leads some people with the disease to consider medical assistance in dying (MAiD). In this article, we describe how a variety of moral problems can emerge from this particular context and affect the well-being of people with ALS, their loved ones, and their caregivers. As MAiD is framed by specific eligibility criteria, broadening its eligibility is often proposed to address these issues. This critical review of the literature aims to identify moral issues relating to ALS that may persist or arise in the event of such widening. The MEDLINE, EMBASE CINAHL and Web of Science databases were searched using 4 search combinations to capture insights from existing literature on ethics, MAiD and ALS (N=41). A thematic content analysis highlighted 3 contextual categories where moral issues emerge (the experience of the disease, the choice of how to die, and the implementation of MAiD). Two important observations are discussed: 1) there are differences in perspective between stakeholders, which can lead to disagreement, but some similarities of perspective also exist; 2) the widening of MAiD eligibility mainly concerns moral issues related to the choice of how to die, and thus constitutes a partial solution to the problems identified.