The Manchester United forward trained on his own in the England team's hotel on Thursday, after having picked up a minor injury to his knee.
Rashford was quick to reassue fans on social media that it was only a very minor knock, and his teammate Kieran Trippier confirmed that the 20 year-old would be fit for selection in England's first game in Group G against Tunisia on Monday.
After a man-of-the-match award winning display in a friendly against Costa Rica last week, Rashford is a major contender when Gareth Southgate is choosing his starting XI for the game.