"If the Morse code is supposed to spell out Flynn then there is a mistake", one follower wrote.
The morse code for "R" is dot dash dot, and the morse code for "L" is dot dash dot dot. The tattoo reads "Frynn".
"New #tattoo can you guess who?" he wrote in the caption.
But fans were not so kind on social media as they bluntly called the actor out on his mistake.
Orlando Bloom paid a heartfelt tribute to his son by getting a Morse code tattoo of his name - but it turns out it was misspelled.
The tattoo artist later took to Instagram to acknowledge the error, assuring fans that it would be corrected.
Bloom's tattoo artist acknowledged the mistake on his Instagram.
Flynn was born to Bloom and ex-wife Miranda Kerr on January 6, 2011, at 9:03, according to the tattoo. We have a child. "Miranda the supermodel and Katy Perry as his [future stepmum]", Bloom said, before playful adding, "I'm just like, 'We need to get him in therapy right now'".