Barcelona coach Luis Enrique says they must beat Real Sociedad today if they want to win the title.
Barca remain ahead of Real Madrid on the Liga table.
"I feel that if we want to win the league title, all three points are imperative from the Real Sociedad game," said Enrique.
La Real beat Barca earlier this season.
"I've no negative memories from that loss. It was a defeat, no more, no less. Losing games is due course as part of the season."