The incoming Manchester United manager is confident his players are not getting ahead of themselves prior to their clash with Australia on Wednesday
The Dutch produced the performance of the tournament so far by coming from behind to humiliate the reigning world champions and take the early initiative in Group B. The 2010 runners-up will continue their campaign on Wednesday when they face Australia, a team they have never beaten.
And although morale is high in the team, Van Gaal is confident his side will not become complacent against the Socceroos.
"Nothing has changed, the team reacted very well, especially the more experienced players, they understand what is going on," he said at Tuesday’s pre-match press conference.
"They knew that was just one win, we haven’t even qualified yet, so I see this attitude in a positive way.
"At the same time, I must prepare this team for the next match. So no new approach to what we’ve been doing."
Despite his call for continuity, Van Gaal could alter his formation for the clash at the Estadio Beira-Rio, switching from the 5-3-2 which served him so well against Spain to a 4-3-3 with Dynamo Kiev midfielder Jeremain Lens in with a chance of starting the game.
"Against Australia I can play both systems, which is something I couldn’t do against Spain," he said.
"There will always be critics, if I was using a 4-3-3, I would’ve heard it the same way. In general, the press needs to write something, positive or negative, which for me tends to be more negative. But it’s okay."
Australia lost their opener, 3-1 to Chile, and Van Gaal is not expecting a defensive mindset from Ange Postecoglou's men.
"Their line-up and tactics show just how much of an offensive side they are. I think they will play more offensively than anyone here can imagine."