The striker hit the post inside the opening two minutes, resulting in Inigo Martinez turning the ball into his own net.
The club's manager told Sky Sports News: "He was absolutely terrific tonight, I was shouting at him in the last five minutes though. We just want a top player like Wayne to play well.
"I said from day one that his training was great. I think England have seen that. But we need to see it all the time."
The result has left United at the top of Group A.