Twitter CEO Jack Dorsey admitted Wednesday that his social media platform’s rank-based timeline and search functions were still a work in progress after he faced a backlash last week from several high-profile Republicans, including President Trump, over conservative content being deprioritized or “shadow banned.”

“It’s not always going to be right. We’re going to get better and better over time,” Dorsey said during an interview with Fox News Radio’s “Benson & Harf,” referring to Twitter’s technological innovations and application updates.