In one of the most influential studies on family firm internationalization, Sciascia et al. (2012) advance a curvilinear relationship between family ownership and firm internationalization. We replicate their study adopting a three-step approach. First, we use the same measures on a different sample to test the generalizability of their findings. Second, we change the independent variable and hypothesize a negative relationship between family involvement in the board of directors and firm internationalization. Third, we introduce and measure the moderating role of firm age and firm size in this relationship. Our study advances the family firm internationalization literature both theoretically and methodologically. Theoretically, we show that it is not so much family ownership per se, but the influence the family obtains through board directorship that affects the family firm internationalization strategy. In addition, we show that this effect is moderated by firm age and size. Methodologically, our study is an important step forward toward increasingly transparent and replicable family business research.