France's 1998 World Cup-winning coach Aime Jacquet believes Les Bleus' disappointing build-up results could work in their favour at the World Cup.

Raymond Domenech's side went down 1-0 to China last Friday, after having come from behind to edge Costa Rica 2-1 and then being held to a 1-1 draw by Tunisia in their previous warm-up games.

But Jacquet insists such unconvincing form is not a cause for concern.

Asked if he is worried, he told L'Equipe: "No. Paradoxically, I would say it is a very good thing.

"Today, players should be angry because of losing the third game, against China.

"I tell you that against Uruguay, their concentration will be twice as strong."

Jacquet has warned Les Bleus, however, that they must not live on past glories.

The 68-year-old added: "Each team has its footballing history. It is important to tap into, but you must not rely on it.

"If players do that, they make a small mistake."

France begin their Group A campaign against Uruguay on Friday night before further games against Mexico and hosts South Africa.