Barcelona coach Xavi admits they battled to their draw with Girona.
Monday night's Catalan derby finished in a 0-0 stalemate.
Xavi later said: "We would have taken this gap before the start of the season, when you don't win and, even more so at home, you think that we could be 15 points ahead, but we have to look at it positively and we are 13 points clear.
"We're in a very good situation and I'm not worried. The game was good, with lots of chances. We did some very good things, we were very good at pressing high and winning balls back.
"We were lacking in accuracy. If we take the result, we can't be positive with a point at home, although the bottom line is that we are 13 points ahead with 10 games to go."
Xavi added, "The main objective was to win the league and we are well on our way. We've got it there, we're in the fight."