Active citizenship is a goal in which universities want to invest: student activism has shown to increase students' skills and support positive study atmosphere. The purpose of this study was to analyse university students' motives for participating in student activism in order to find out ways of enhancing the development of active citizenship in students. This was a narrative study in which 47 student activists of Finnish university student activist organisations wrote their personal narratives about their careers as student activists. According to the data, the students had many motives for participating in student activism, such as making friends, fixing deficits in the study environment and benefitting their future work careers. The study also showed that sometimes students participated in student activism only by a coincidence. Based on the findings, suggestions for practical means to develop active citizenship in university students are discussed from the point of view of students themselves, teachers and universities.