Real Madrid coach Santiago Solari says the winner at Heusca will be good for Gareth Bale's confidence.
Bale's goal proved enough for the 1-0 triumph.
"The value in Bale's goal is the three points," Solari said.
"He also scored in Rome and that makes me happy.
"It's important when there are matches that you can't score three or four goals, that the one you do is taken advantage of, and that's down to (Thibaut) Courtois."