It just means Berisha - the most feared marksman in the A-League - is overdue to punish some team.
First-placed Roar will play third-placed Adelaide at Suncorp Stadium on Sunday. It is just the sort of big occasion where Berisha might explode.
Berisha hasn't scored in his last three games. The length of that run isn't something to be concerned about - Emile Heskey, for instance, hasn't scored all season for Newcastle Jets - but it is unusual for Berisha this season.
The Albanian has played in 14 of Brisbane's 21 games, missing six through injury and one due to suspension. He has scored eight goals and until now the longest he had gone without a goal this season was two games.
Roar goalkeeper Michael Theo wasn't worried when told Berisha was on his driest run of the season.
"Besart was unlucky he didn't have one last weekend," Theo said.
"He's a quality player and he threatens every time he's out there, but whether he scores or not, as long as we're scoring goals as a team, that's fine.
"He's a predator and I'm sure he'll be on the score sheet again very soon."
Theo reported Berisha was looking sharp as he prepared for Sunday's blockbuster.
"He's had a really good week on the training field.
"He's the best striker in the league, so we're confident he'll be back scoring soon. But, in saying that, as long as we score we're not too bothered who it is that scores."
Berisha will leave Brisbane at the end of the season to join Melbourne Victory, and when the deal was announced he pledged to give his all to Roar in the meantime.
Theo said none of that had changed.
"With Besart, you get 100 per cent all the time.
"There's no denying that. His full focus is on Brisbane for the rest of the season.
"You can tell at training he's ready, and come game day he's switched on. That's just the sort of committed player he is."
Roar had been down on scoring immediately before last weekend's 3-1 win over Perth Glory, going goalless in two straight games against Newcastle Jets and Melbourne Heart. Each match resulted in a 1-0 loss.
"We definitely gained confidence again from the win over Perth, after back-to-back losses," Theo said.
"It was an important result, and scoring three goals at home has kick-started our attacking game."
Adelaide, with 13 goals in its last four games, has overtaken Brisbane as the highest-scoring team in the competition (38 to 36).
But Roar still has the best defence, having conceded just 19 goals. Western Sydney Wanderers is the only other team near it in that department, having conceded 21.
Brisbane has not conceded more than one goal in a game for seven straight rounds. The last time it conceded more was in a 2-1 home loss to Adelaide in round 14. Roar beat Adelaide 2-1 away in round nine.
"Adelaide is playing some great football and it'll be a great encounter," Theo said.
"But we'll back ourselves at Suncorp. It's a game we're really looking forward to.
"We know we're in for a tough game, but in saying that our preparation is always about us and we have to make sure we focus on our strengths and are ready to go."
Theo revealed Brisbane was happy to play in-form, fellow top-six teams like Adelaide, because Roar tended to produce its best form in such matches.
Brisbane's last six games are against fellow current top-six teams and ninth-placed Heart, which is currently the hottest team in the competition with six wins and a draw in its last seven games.
"I think we've performed very well against top-six teams," he said. "And now we've got to get the job done over the last six rounds and make sure we finish on top of the ladder."
Roar has played 10 games this season against current top-six teams, for seven wins, two losses and one draw. It has played 11 games against teams currently outside of the top six, for six wins, four losses and one draw.