Arsene Wenger believes he has turned Tomas Rosicky into more of a goal threat by playing him in a central position.
The Czech international midfielder had only scored once in 65 Premier League games before getting both of Arsenal's goals in Saturday's 2-1 win away at West Bromwich Albion.
Manager Wenger feels Rosicky is best suited to the role as the most attacking of his three central midfielders and, even though Santi Cazorla and Jack Wilshere can also play there, feels he has a vital role to play.
He said: "Before he played too far away from the box. Before I played him always wide but he plays more central now and he's more dangerous. I said to him: 'It's a special game for you because you scored two goals.' The most important thing is he scores them when you need them, and we needed them."
It was only Rosicky's second league start of another injury-hit campaign but despite the difficulty in finding him a place in the team, Wenger remains a fan of the former Dortmund player, who he wants to keep at Arsenal for the remainder of his career.
He added: "There is the problem with injury and then there is the problem with competition for a place, with Wilshere and Cazorla, but he's such an important player who turns the game forward, brings movement into the game, makes the game look simple and always you feel when he has the ball that something can happen. Not many players have that in the locker."
Wojciech Szczesny was not even among the substitutes at The Hawthorns, with Vito Mannone the chosen deputy to Lukasz Fabianski, but Wenger said he was not injured.
He explained: "I rotate the goalkeepers on the bench because when they are two games on the bench then they work for two games, because when they sit always on the bench they lose fitness."