Mark Zuckerberg doesn't think Facebook will be fixed until next year.

Mark Zuckerberg

Mark Zuckerberg

The website's CEO has revealed that repairing the social networking site is at least a "three-year project " that will extend through to 2019 but he's hoping "to end this year on a significantly better trajectory than when we entered it."

He wrote in a statement: "While a lot of this work is just about doing our jobs better -- finding issues faster, making fewer mistakes, etc -- many of the hardest decisions we face involve difficult tradeoffs between principles we value deeply. For example, giving people a voice is at the heart of our mission. But we also have a responsibility to keep people safe."

Zuckerberg has spent the past year trying to fix Facebook's issues after it hit the headlines numerous times due to its involvement in the Cambridge Analytical scandal, its role in spreading false information and its involvement in the Russian interference in the 2016 presidential election.