► De- and re-internationalizations may be caused by internal and external factors. ► Serial nonlinear internationalization does not only occur in project businesses. ► De-internationalization is not a sign of failure. ► Subsequent de- and re-internationalizations are normal, especially in small markets. International business scholars still pay the most attention to two firm types: (1) gradual/step-by-step/Uppsala type internationalizers and (2) international new ventures/born globals. Serial nonlinear internationalizers (SNIs) – firms with several subsequent exits and re-entries or considerable foreign involvement fluctuations – have received almost no attention. This exploratory study aims to contribute to the emerging serial nonlinear internationalization literature by (1) discussing the nature of an Italian machinery producer's serial nonlinear internationalization, (2) explaining why it internationalized nonlinearly and (3) developing research implications. It concludes that despite having had a year or more without export activities in 29 countries (in eight of them twice or more) and activities only in seven countries in 2011, this firm has been relatively successful. Thus, de-internationalization is not automatically a sign of failure. Moreover, subsequent de- and re-internationalizations are normal for other firms besides project businesses, especially if their markets are small and exit/re-entry costs low.