We conducted two studies reexamining the findings of van der Toorn et al. (2015) that a sense of powerlessness fosters system justification (SJ). In Study 1, we used the Sense of Power Scale (Anderson et al., 2012) and found that a sense of powerfulness as well as a sense of powerlessness are positively associated with SJ. In Study 2, after priming participants with a feeling of powerfulness vs. powerlessness, we investigated the mediating effects of emotions on the relationship between sense of power and SJ. Although participants experienced positive emotions in the Powerful condition and negative emotions in the Powerless condition, we did not find any significant effects of emotions on SJ. Further studies are needed to investigate the relationship between a sense of power and SJ using more sophisticated methods.