This article discusses the use of the concept of risk in ethical guidelines directed to research in the humanities and social sciences (CHS), suggesting an alternative to that concept. In Public Health field (PH), risk assumes a peculiar semantics, closely linked to the idea of calculation and predictability, according to the disciplinary bases that support it. This circumstance makes incongruous its use in initiatives justified precisely by strong distinctions between biomedical and social research, as ilustrated by specific guidelines for CHS, especially to the qualitative approach. The authors do not seek to redefine risk, operating a conceptual transit, but to sustain an effective conceptual distance within these specific guidelines, keeping congruence with the objectives pursued by its construction. Taking risk in the quantitative sense, still hegemonic in PH, overlooks important dimensions, reifying the use of this concept in situations where uncertainty, unpredictability, intersubjectivity inherent to the processes beyond the calculation and measurement, as in the case of a significant portion of the research in CHS. Alternatively, it is suggested to replace the expression level of risk, as also appears in Brazilian resolutions.