The versatile defender has voiced his disappointment with his side's draw with the Nordic side, but is confident they can beat France on Tuesday
The Real Madrid defender broke the deadlock shortly after the break, but Teemu Pukki restored parity in the 79th minute to help Finland to a hard-fought draw.
"Looking at the result it's a real pity, especially after I celebrated my 100th cap with a goal," he was quoted as saying on the official Uefa website.
"We completely controlled that game but ultimately let it out of our grasp. We are not happy. We just weren't precise enough when it came to finishing Finland off."
The defender then looked ahead to Tuesday's match away against France, and is confident Spain can emerge victorious.
"We will be facing a great team on Tuesday but we can beat them and it's that mentality we'll take there."
Spain are currently trailing France by two points in Group I.