British actor Michael Caine says the Islamic State group was behind his decision to officially change his nameā€¦ to Michael Caine.

The 83-year-old, born Maurice Micklewhite, says he adopted the stage name Michael Caine decades ago. But his official name remained on his passport, which he said caused some unnecessary delays at airport security.

The Academy Award-winning actor told The Sun: "I changed my name when all the stuff started with ISIS and all that."

Caine said airport security guards would recognize him before he'd hand them a passport with the name Maurice Micklewhite, causing some confusion.

"I could stand there for an hour," he said. "So I changed my name."