EastEnders actress Jo Joyner was left red-faced after bungling her lines during one of the show's live scenes.
The 37-year-old soap star, best known for playing Tanya Branning from 2006 to 2013, reprised her role as part of the show's 30th anniversary celebrations.
But things didn't go according to plan when her character showed up to support her best friend Jane Beale on her wedding day.
Fans were left confused when within moments of being on screen, Joyner's character referred to Ian Beale by his real name "Adam [Woodyatt]"
Tanya asked the character Jane, played by Laurie Brett, "How's Adam?", to which Brett could not hide her bewilderment.
After the episode aired, some viewers took to social media to mock the blunder. Others expressed their delight at her short-lived return and pleaded for a more permanent comeback.
Joyner herself tweeted that her mistake was proof that the scene was live.
Following Wednesday night's climax, which saw Peter Beale accuse his family members of killing his twin, the identity of Lucy Beale's murderer will be unmasked in tonight's hour-long episode (19 February).