Snapchat has updated its guidelines for publishers to clean up what is shown on its news service.

The rules restrict publishers from posting questionable pictures on Discover that have no news or relevant value. Snapchat also clarified guidelines that prevent publishers from including reports or links to outside websites that could be considered fake news, saying all content must be fact-checked and accurate, nytimes.com reports.

Snapchat aims to remain an “informative, factual and safe environment for everyone,” says spokeswoman Rachel Racusen. It also plans to give publishers a tool in February that would allow them to age-gate content.

Snapchat is making moves to limit problems experienced by Facebook and Twitter, which both give users large amounts of freedom in what they post, but each experienced criticism on the back of the fake news controversy.

“Snapchat thinks about the role that its content plays in the lives of consumers differently,” Steven Kydd, founder of online food publication Tastemade tells nytimes.com.au