The aim of this article is to shed light on teachers' actions to counter racism expressed by their colleagues. Based on qualitative interviews with teachers in Swedish upper secondary schools, the article presents a narrative analysis of three teachers. The article highlights the complexity of what it means to be a colleague in anti-racist work and argues that this brings different risks and possibilities for White teachers and for teachers of colour. By relating the narratives to research on racism and teacher professionalism, the article contributes to a better understanding of the prevalence and character of racism expressed by colleagues, and points at the need for further research.