He told the club's official website: "It's a massive win. Last week was our Champions League final and we showed that we could handle the pressure. We showed character and played good football as well. The four goals also makes a difference in the table with our goal difference.
"It was a penalty and I finished it well and that put us up 2-0 before half time, and that was great for confidence.
"We probably needed this earlier in the season but I'll take it now because we've got two more games at home, we need to keep going and keep believing."
Sunderland are 17th in the Premier League with 32 points from 35 games this season.