House Speaker Paul D. Ryan said Tuesday that a tweet that Donald Trump’s campaign sent out attacking Hillary Clinton, which included Star Of David imagery, is another sign that the campaign has to fix its social media messaging.

“I really believe he has got to clean up the way his new media works,” the Wisconsin Republican said in an interview on the Milwaukee radio station WTMJ .

Ryan told host Charlie Sykes that the tweet is a distraction and blasted the campaign staffer who posted the the image of Clinton with the words “most corrupt politician ever” inside a Star of David.

“Look, anti-Semitic images have got no place in a presidential campaign. Candidates should know that,” Ryan said. “The tweet has been deleted. I don’t know what flunky put this up there, but obviously they got to fix that. We got to get back to the issues that matter to the public.”

This is not the first time the speaker has criticized the presumptive GOP nominee. Last month, Ryan called out Trump’s comments about the judge presiding over the Trump University lawsuit, saying the remarks were the “textbook definition of a racist comment.”