A 'Jeopardy!' contestant confused Michael Caine for Mick Jagger

• A "Jeopardy!" contestant mixed up Michael Caine and Mick Jagger.
• The clue, which was presented with a photo of Caine, read: "To honor his father, this star here was knighted in his birth name, Sir Maurice Micklewhite."

A "Jeopardy!" contestant mistook a photo of Michael Caine for Mick Jagger on Monday night's show.

Contestant Mazin Omer selected the $400 clue in the "Knight After Knight" category, which featured a photo of Caine along with the clue.

"To honor his father, this star here was knighted in his birth name, Sir Maurice Micklewhite," Mayim Bialik, the show's host, read.

"Who is Mick Jagger?" Omer answered, mixing up the Oscar-winner for the Rolling Stones frontman, who has also been knighted.

Jeopardy fans flocked to Twitter to call out Omer's mistake.

"A contestant on Jeopardy just thought Michael Caine was Mick Jagger. What is happening here?" one fan wrote.

Another fan, whose Jeopardy episodes air earlier than her mom's in another state, warned her mom of the upcoming gaffe.

One fan called it "an historic bad answer."

Omer ended up coming in second place on Monday's episode of "Jeopardy!" behind winner Eric Ahasic.