The centre-back knows the Camp Nou side haven't been up to their usual standard but is confident an improvement is not far away
Gerard Pique concedes Barcelona can improve but claims the level of criticism they have received this season has been unfair.
Barca lead La Liga after 12 games, despite having suffered three defeats, two more than title rivals Real Madrid and Atletico Madrid.
Ernesto Valverde's men returned to form ahead of the international break with a 4-1 win over Celta Vigo, which followed a 3-1 loss at Levante and goalless Champions League draw with Slavia Prague.