The win at Bodo/Glimt was a big step in the right direction.
The winner came after a toe-poked effort hit a defender and bounced back off his chin and into the net.
Bodo/Glimt came into the game with a 14-game winning streak at home in Europe but they were guilty of missing a number of clear-cut opportunities.
Runar Espejord put over when eight yards out in the second but Amahl Pellegrino skewed wide when through on goal in the first.
After an hour on the artificial pitch in Norway, they had to bring on Granit Xhaka and Gabriel Martinelli, but the result, combined with the fact he was able to rest Gabriel Jesus and defender Gabriel, will delight manager
Bodo/Glimt, who played a game more because of the postponement of the PSV game, are five points behind the leaders.
Next Thursday is when the rearranged match with PSV will take place.
You could see the confidence in his face when he was impressive in the win over the Reds.
After two minutes, he got in behind the Bodo/Glimt defence and fired across the six-yard box.
The 21-year-old continued to persist, despite the fact that it was his driving run that cut open the hosts' defense.
He got a huge slice of fortune with the goal, but it was reward for his hard work and once again highlighted his importance to the team.
The result and resolve they showed to keep Bodo/Glimt out in the second half is an example of the more disciplined side that is being shown.
Rob Holding made a key pick up in the first half, while Lokonga made more picks than any other player.
With a chance of a title challenge on the cards, Arteta will want to get top spot wrapped up as early as possible so he doesn't have to play in the play-offs.