Michael J. Fox takes a tumble on stage during a Back to the Future panel in Philadelphia... after admitting that his Parkinson's battle is getting 'harder'

Michael J. Fox suffered a tumble on stage during a Back to the Future Q&A panel at Fan Expo in Philadelphia over the weekend.

The now retired 61-year-old actor — who was diagnosed with Parkinson’s disease in 1991 — lost his footing as he made his way to the stage.

Thankfully the impact of the fall was softened as the beloved star landed on the couch in front of him, instead of the hard floor. The entertainer appeared to be uninjured following the brief fall, as he took his seat and continued on with the panel.

He was joined by his Back to the Future co-stars Christopher Lloyd, 84, and Tom Wilson, 64, for the occasion.

It comes a little over a month after he shared that his more than 30-year battle with Parkinson’s — a long-term degenerative disorder which affects the nervous system and motor skills — was getting ‘harder.’

Tumble: Michael J. Fox suffered a tumble on stage during a Back to the Future Q&A panel at Fan Expo in Philadelphia over the weekend

Making his way: The now retired 61-year-old actor — who was diagnosed with Parkinson’s Disease in 1991 — lost his footing as he made his way to the stage

Uninjured: Thankfully the beloved entertainer appeared to be uninjured following the brief fall, as he took his seat and continued on with the panel

Fox — who played the iconic Marty McFly in all three films — sported a laid-back look for the event, wearing a denim jacket over a white t-shirt, and black jeans.

He finalized the look with a pair of white Nike sneakers and a navy and yellow baseball hat. The actor also accessorized with a pair of clear-rimmed eyeglasses.

Meanwhile Lloyd — famous for portraying Dr. Emmett ‘Doc’ Brown in the film — looked casual cool in a black puffer vest over a long-sleeve top and blue jeans.

Wilson — best known for playing bully Biff Tannen — opted for a classy navy blazer and jeans.

The trio were pictured sitting alongside each other on the stage as they took turns answering questions from fans.

The five-time Emmy winner had already become the breakout star of the sitcom Family Ties when he was cast as teen time traveler Marty McFly in 1985’s Back to the Future.

It was a critical and commercial success, earning more than $380 million at the box office worldwide.

He reprised the role, traveling forward in time in the second film which was panned by critics.

Soft landing: The impact of the fall was softened as the star landed on the couch in front of him, instead of the hard floor

Getting harder: It comes a little over a month after he shared that his more than 30-year battle with Parkinson’s was getting ‘harder’

Difficult: Parkinson’s is a long-term degenerative disorder which affects the nervous system and motor skills

Greetings: Fox was pictured shaking hands with the host

Casual cool: Fox — who played the iconic Marty McFly in all three films — sported a laid-back look for the event, wearing a denim jacket over a white t-shirt, and black jeans

Sporty look: He finalized the look with a pair of white Nike sneakers and a navy and yellow baseball hat

Accessories: The actor also accessorized with a pair of clear-rimmed eyeglasses

Reunited: He was joined by his Back to the Future co-stars Christopher Lloyd, 84 (pictured) and Tom Wilson, 64, for the occasion

Q&A: The trio were pictured sitting alongside each other on the stage as they took turns answering questions from fans

Laid back look: Lloyd — famous for portraying Dr. Emmett “Doc” Brown in the film — looked casual cool in a black puffer vest over a long-sleeve top and blue jeans

Iconic: 1985’s Back to the Future was a critical and commercial success, earning more than $380 million at the box office worldwide

Popular: It was followed by Back to the Future: Part II, the third highest grossing film of 1989, and Back to the Future: Part III

Dynamic pair: The iconic duo pictured as Dr. Emmett ‘Doc’ Brown and Marty McFly and in a still from the 1985 film

That didn’t keep fans from pouring into theaters to see it, making Back to the Future: Part II the third highest grossing film of 1989.

The actor played dual roles as Marty and his ancestor Seamus McFly in Back to the Future: Part III, traveling back to the Old West to save Christopher Lloyd’s Doc Brown from being murdered by a gunslinger.

Aside from the fall, it was an otherwise good week for the actor, who celebrated his lookalike son Sam’s 34th birthday with a low key family get-together.

He marked the occasion on his Instagram, sharing a snap of his eldest child blowing out candles as well as two photos of them together enjoying a sunny day on a boat.

In one of the photos the actor is seen lovingly giving his son a kiss on the cheek.

‘Happy Birthday to my big bouncing baby boy @palekidd you are the best,’ he wrote in the caption underneath the snaps.

Fox shares Sam with wife Tracy Pollan, 62.

The pair tied the knot in 1988, and are also parents to twins Aquinnah Kathleen and Schuyler Frances, 27, and Esmé Annabelle, 21.

Lookalike son: Aside from the fall, it was an otherwise good week for the actor, who celebrated his lookalike son Sam’s 34th birthday with a low key family get-together

Birthday celebrations: He marked the occasion on his Instagram, sharing a snap of his eldest child blowing out candles as well as photos of them together enjoying a sunny day on a boat

Strong bond: In one of the photos the actor is seen lovingly giving his son a kiss on the cheek

Family: Fox shares Sam with wife Tracy Pollan, 62. The pair tied the knot in 1988, and are also parents to twins Aquinnah Kathleen and Schuyler Frances, 27, and Esmé Annabelle, 21; Pictured 2023

In April Fox got candid about living with Parkinson’s disease, telling CBS Sunday Morning: ‘[Parkinson’s] banging on the door … I’m not going to lie, it’s getting hard. It’s getting harder. It’s getting tougher.’

‘Every day it’s tougher … that’s the way it is,’ he added.

He also shared he didn’t believe he would live to see his 80th birthday. ‘You don’t die from Parkinson’s. You die with Parkinson’s. So I’ve been thinking about the mortality of it. I’m not gonna be 80. I’m not gonna be 80,’ he said.

Fox stepped away from acting back in 2020 due to his declining health.

Since his diagnosis, the iconic actor has focused his life on raising money to research the disease.

He has since raised over $1 billion in research funding via the Michael J. Fox Foundation for Parkinson’s Research.

In November, Fox was presented with an honorary Academy Award for his work surrounding the disease.