The article analyzes the relationship between media literacy and fake news, as one of the challenges that misinformation represents in the Internet age, for its risks for the political system, decision making and also for the reputation of companies and citizens. A theoretical review on the topic by media literacy and misinformation is presented, as a challenge for digital journalism. The case of colombiacheck.com is analyzed, which is an association journalist platform, that is a pioneer in Colombia in fact-checking journalism, to highlight the contribution that this methodology represent in the fight against fake and malicious news, on the one hand and to highlight that its represents a simple and replicable technique through which reinforce the media literacy of citizens and journalists.