For the first time, Twitter has branded a political video shared by President Donald Trump as manipulated media.

The video, which mocked Joe Biden, was originally posted by White House social media director Dan Scavino . The clip included a speech made by Biden on Saturday that was edited to make it appear that the Democratic candidate had inadvertently endorsed the president.

Trump retweeted the video on Saturday and added: I agree with you, Joe! It was also retweeted by Trumps campaign manager Brad Parscale.

The manipulated media stamp is a new Twitter policy meant to combat false political messages and alert users to misleadingly altered media or completely fabricated events. Twitters policy, which went into effect on Thursday, defines manipulated posts as any photo, video or audio that has been significantly altered or fabricated.

The Biden video was edited to shorten one of his sentences so he could be heard saying: Excuse me. We can only reelect Donald Trump. But what he actually said: Excuse me. We can only reelect Donald Trump if, in fact, we get engaged in this circular firing squad here. Its gotta be a positive campaign.