English Premier League leader Liverpool is determined not to let complacency creep into the hunt for its first domestic top-flight title in 30 years, midfielder Adam Lallana has said.

The Merseyside club is on 55 points with 19 games left to play, 13 points clear of second-place Leicester and 14 ahead of defending champion Manchester City, who have both played a game more.

Liverpool became only the third team to go unbeaten in 50 consecutive home games in the English top flight when it beat Wolves 1-0 on Sunday and Lallana said it would be more of the same in 2020.

"We want to maintain that form going into the new year and keep Anfield a fortress," Lallana told the club's website. "We can't take our foot off the gas."

Most pundits already regard Liverpool as champion-in-waiting.

However, Lallana says the Reds are not looking too far ahead and are fully focused on Thursday's league match against Sheffield United and Sunday's FA Cup tie against local rival Everton.

"We've got a couple of huge games at home in the next week－Sheffield United, who has had a fantastic season, and then the derby in the Cup," he said.

Midfielder Xherdan Shaqiri missed the Wolves game with a hamstring problem and manager Jurgen Klopp said the Swiss could be out for about 10 days.