“Downton Abbey” Season 5 will not feature modern day water bottles, despite what the picture of Lady Edith and The Earl above indicates. The historical drama accidentally posted a promotional photo to Facebook and Instagram with a water bottle clearly visible on the mantle. Fans and the cast seemed to have a good laugh at the historical inaccuracy (dubbed “water bottle-gate”), and the cast even took to Instagram to react to the flub with the hashtag #wH2oops.

The actors aren’t just having a good laugh, though. They are using the accident to bring awareness to WaterAid, a charity that brings clean water to developing countries. The Instagram post links to WaterAid's website.

"After seeing the reaction the picture caused earlier this week, the cast and crew came up with the idea of turning some of this attention towards an issue around water that really matters. They hope that by posing for this picture they will be able to raise awareness and amplify the work of international charity -- WaterAid," an ITV spokesperson said in a statement.

“It brought a really big smile to my face when the cast of Downton Abbey said that they wanted to support WaterAid’s work.  How fantastic that the attention created over one water bottle ends up benefiting some of the world’s poorest communities through access to safe, clean water today,"  said Barbara Frost, chief executive of WaterAid.

Fans can donate online to WaterAid. The U.K. government will match every donation the U.K. branch of the organization receives until Sept. 9.

“Downton Abbey” Season 5 will return to PBS on January 5, 2015. Did you find the water bottle incident funny or unprofessional? Sound off in the comments section below!