Paris Saint-Germain lost their Champions League semi-final first leg 1-0 to Borussia Dortmund last Wednesday, but that does not mean they will go all out to score twice in the return game, manager Luis Enrique said on Monday.

The Ligue 1 champions overturned a one-goal deficit against Barcelona in the quarter-finals, winning 4-1 in the second leg, but PSG are prepared to take the game with Dortmund to extra time if that is what is needed.

"The aim isn't to win by two goals, but to win, if you think you have to score two goals, that seems like a big target," Luis Enrique told a press conference ahead of Tuesday's game in Paris.

"We just want to play and score. If we score in the 89th minute, it will carry on. We don't need to score right away, we just want to win the game.

The Spaniard wants his side concentrated on all aspects of their game, not only in attack, and a goal from the Germans won't be the end of the world.

"You could score twice in two minutes, but you could also concede a goal," he added.

"We have to be 100 per cent focused on attack and defence. If we concede a goal, it is not serious, we have to stay calm. If we score twice very quickly, our opponents will have to react.

"It will be an even game with a high level of play on and off the ball, so it will be tough for both teams."

Since last week's loss, Luis Enrique has declared on more than one occasion that PSG will win the return game, saying: "That is the only sentence I know in French, 'on va gagner' we are going to win.

"It is a sentence I like, and I always think my team will win, so that is what I say."

PSG have home advantage for the second leg, and Luis Enrique has no doubt that the Parc des Princes will once again be a driving force for his team.

"I think the role of the fans will be vital, as it has been throughout the season," the manager said.

"We have a total guarantee that the fans will be fully behind us as they have been all year, particularly when we need them, and this isn't a normal thing.

"We will all be together, and I hope we can celebrate a victory and a place in the final."