Jack Wilshere has challenged Arsenal teammates to shake off their opening day defeat to Aston Villa.
The Gunners now face a Champions League qualifier against Fenerbahce.
"We are not happy, we have got to look at ourselves," the England international said on BBC Sport. "We have got a big qualifier coming up and there can be no mistakes now - we have got to push on.
"We have got to pick ourselves up. We need to put in better performances and win games."
For the big stories and the banter follow us on Twitter: @tribalfootball