June 24, 2011 at 07:51 PM EDT

Jerry Lewis, 85, was forced to cancel a show in Australia because of health reasons, the Associated Press reports. The actor had planned to appear Friday night in Sydney for a show with the Muscular Dystrophy Foundation Australia. But according to the foundation’s CEO, David Jack, the actor, who has struggled with various health issues in the past few years, was “not well enough to take the stage.” No other details are known at this time.

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