Singer Elton John said his two kids are concerned about his eventual death.

The 77-year-old recording artist discussed the topic in his new documentary “Elton John: Never Too Late,” which premiered on Friday at the Toronto International Film Festival. John has two sons – Zachary, 13, and Elijah, 11 – via surrogate along with husband David Furnish, 61.

“They think about my mortality. They worry about my mortality,” John said, per People. “Not so much David, but me.”

The Grammy Award winner went on to explain that it’s because they “love their daddy, so they want me to be around forever, [and] I would love to be around forever.”

“I want to see them have children and get married. I don’t think I’m going to be around for that. Who knows?” John continued. “You never know. So that’s why I want to use the best time — the best of my time — while I’m around,” he adds. “Time together is so wonderful and so precious.”

John also talked about his health issues recently. Earlier in September, he reported to have partial visual impairment in one of his eyes. 

“Over the summer, I’ve been dealing with a severe eye infection that has unfortunately left me with only limited vision in one eye,” he wrote on social media at the time. “I am healing, but it’s an extremely slow process and it will take some time before sight returns to the impacted eye.”

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Last summer, the recording artist was hospitalized after falling at his villa in Nice, France. He was spending time there after concluding his “Farewell Yellow Brick Road” tour.

Years ago, the “Rocket Man” singer was misdiagnosed with a colon infection when he was actually suffering from appendicitis. He also had complications after undergoing surgery for prostate cancer in 2017, per The Guardian.

“It turned out that I had a rare complication from the operation,” John said, mentioning how he spent his nights in the hospital awake, “wondering if I was going to die.”

“In the hospital, alone at the dead of night, I’d prayed: please don’t let me die, please let me see my kids again, please give me a little longer,” he wrote in his memoir, “Me,” per the outlet.

“In a strange way, it felt like the time I spent recuperating was the answer to my prayers: if you want more time, you need to learn to live like this, you have to slow down.”