BOSTON (CBS) – It’s not a great day for his favorite team, but Monday marks a special milestone for Liam Fitzgerald.

The 12-year-old went viral back in 2014 for a video that showed him fist-bumping Boston Bruins players during a pregame skate at the TD Garden. Now he’s celebrating five years of being cancer-free. His tweet celebrating the occasion has more than 1,300 likes.

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Liam, who has Down syndrome, successfully battled leukemia. The Leukemia & Lymphoma Society named him “Man of the Year” back in 2015 for raising more than $152,000 for cancer research using the hashtag #bumpoutcancer.

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Liam has remained a loyal fan of the Bruins, whose season ended Sunday with a loss to the Tampa Bay Lightning in the second round of the NHL playoffs.

He had a positive message for the team on Monday.

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“You played your hearts out! Through injuries and all! Keep your heads high and be proud of the excellent season you had!” Liam tweeted.