Swansea City boss Michael Laudrup says his side still has plenty of work to do before they reach the Capital One Cup final.
"To be honest I'm delighted with the result. I would lie otherwise," he told Sky Sports 1.
"I think we have had some historic results already this season - winning at Anfield and at the Emirates. Winning at the European champions though is something very special.
"But there is still a mountain to climb. They have so much quality and we will have to play exactly the same; with the same intensity.
"They could still score three of four goals against us.
"But I am most happy about going into the second leg at home with a possibility to play a final at Wembley."