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I recently received a summer internship offer with a company, and am now in the background check phase. I noticed that I accidentally listed my previous internship start and end date as March 2014 - May 2014 instead of March 2015 - May 2015, that is, I accidentally listed the year one year prior to when I started. The months, job title and company are all accurate. What do you think I should do? Should I contact the HR and tell her I made this mistake? Or wait for the results of the background check to come back?