(CNN) -- Manchester United manager Alex Ferguson has praised Javier Hernandez after the Mexican striker's late goal secured a vital win over Valencia in Europe's Champions League.
Hernandez came on as a substitute in Spain and fired an 85th minute winner to give English Premier League side United a 1-0 victory over the Spanish league leaders.
"The way he took his chance, it was like shelling peas. It was so natural to him," Ferguson told reporters at the post-match press conference. "He has work to do on his physique but you cannot take away from the fact that he is a fantastic finisher."
Hernandez, who represented Mexico at the World Cup in South Africa, joined United from Chivas for £7m ($11m) in May.
He has only started one of United's six league games this season and the goal against Valencia was his first in a competitive match for the 18-time English league champions.
"It was a great night. I am so happy about the goal but also it was important to get the win and three points," Hernandez told United's website.
"I used to watch the Champions League at home in Mexico," he said. "It is one of the most important tournaments in the world and to score in it, so early in my United career, is a dream come true, and a big boost. It will give me so much confidence."
The victory put United's Champions League campaign back on track after a 0-0 home draw with Rangers in their first Group C match.