We scored on either side of the interval and held on to beat Brighton and Hove Albion at Emirates Stadium.
Martin Odegaard scored his first goal of the season, with a precise strike from range into the bottom corner to give us the lead inside the opening quarter of an hour.
We doubled our advantage shortly after the restart, when Georgino Rutter inadvertedly turned Declan Rice's inswinging corner into his own net.
The visitors pulled a goal back after the hour mark through Diego Gomez, who was there to convert after Yasin Ayari's effort had bounced back off the woodwork.