France must show a desire to hurt Ireland in their Six Nations encounter in Paris on Saturday, says Eddy Ben Arous.
Les Bleus laboured to a 23-21 victory at home to Italy in their tournament opener last weekend, with Jules Plisson's lengthy penalty clinching a late triumph for Guy Noves' side.
The head coach has introduced a number of new faces since taking over at the helm from Philippe Saint-Andre following a disappointing 2015 Rugby World Cup campaign.
Ben Arous is pleased the group have got their first outing under Noves out of the way, and feels it will enable them to develop throughout the tournament.
However, the prop called for a more antagonistic approach from his team-mates next time out.
"On the tactical aspect, there are flaws," said Ben Arous. "But we had no reference match, and now we do. The match against Italy will allow us to work.
"We have to respect the positions, the lines, and we were a bit lost. This week, we have worked on it to change course.
"There was also a lack of desire and aggression to hurt the opponent. We must improve that too. It will be important on Saturday."
Ben Arous said that no-one is guaranteed a starting berth, with each player being forced to prove themselves every time they take to the field.
"We are constantly being challenged. It's not like a club, where a player can play two or three matches at an average level," he added.
"Here, the level is such that you have to be efficient from one match to another."