Portugal's Euro 2016 hero Eder said Cristiano Ronaldo predicted he would score the winning goal against France and gave him the encouragement to settle Sunday's final.
Portugal were outsiders to win the final and were dealt a significant blow in the 25th minute when their captain Ronaldo had to be replaced due to injury.
Eder, who plays for French side Lille having previously been at Swansea, said his captain's words had inspired him to make the decisive contribution.
"[Ronaldo] told me I would score the winning goal for the team," the striker told Portuguese newspaper O Jogo. "He gave me this strength, this energy and it was vital.
"It was a goal I've been working for from the first minute of the Euros.
"For all the work we did, for all of the Portuguese, it's fantastic. It's well deserved and we should all be congratulated."
France had better chances in regular time but were unable to capitalise on their superiority despite Ronaldo's exit.
Portugal coach Fernando Santos brought on Eder for Renato Sanches and he broke the deadlock in the extra period after muscling his way past defender Laurent Koscielny before firing a low right-foot shot into the corner of Hugo Lloris's goal.
"When he came on he told me he would score," coach Fernando Santos said. "The ugly duckling went and scored. Now he's a beautiful swan."
Eder's winner gave Portugal their first major title and ended a run of 10 straight defeats by France since 1975.
"The disappointment is immense," his club Lille wrote on their official Twitter account, "but there is considerable pride to be able to count such an attacker in our ranks."