The cast of the popular PBS drama series 'Downton Abbey' has been prohibited from bringing their own items on set after the recent release of a press photo that inadvertently included a water bottle, a new report said.

The image, which was taken to promote the show's upcoming fifth season, featured characters Earl of Grantham (Hugh Bonneville) and Edith Crawley (Laura Carmichael) posing in 1920s era clothing in front of a fireplace with a modern plastic water bottle noticeably visible in the background.

downtown abbey water bottle

While producers were quick to address the apparent mistake, the report states modern accessories have now been banned from the set at Highclere Castle in Hampshire, England, as a precautionary measure to prevent further mistakes from occurring.

"Modern watches and jewellery are out and so even is designer underwear, as the danger is apparently too great, if, say, a chap is bent over," said cast-member Mandrake Walker.

The cast also publicly responded to the affectionally named "water bottle-gate" blunder by releasing a group shot to showcase their support for WaterAid, a charity organization that works to provide access to safe, clean water to poor communities around the world.

downton abbey charity photo

In reference to the incident, show creator Lord Julian Fellowes said: "It was a silly mistake, of course, and I suppose someone will be blown up for it, but if the cast can turn it around and actually help to raise some money for such a terrific cause, then I’m glad it happened."