Nacho Novo admitted there would have been no excuses had his wonder strike not secured the domestic double for Rangers.
Gers claimed the Scottish league championship last week and looked to be suffering from a title hangover in the Scottish Cup final after an uninspiring first half against Falkirk.
But Novo came off the bench for top scorer Kris Boyd at half-time and volleyed in what proved to be the only goal of the game within just 30 seconds of the restart.
And although Walter Smith's men were not at their best, Novo insists they were determined to avoid an upset and complete their double dream.
"Obviously you have celebrations," he said.
"But you know this is a big game here, it's a cup final. There are no excuses."
Novo volleyed the match-winner from fully 25 yards after running onto a left-wing throw-in by Sasa Papac, and it was a fitting goal to win a Cup final.
"I had a chance and I just tried to hit the target and it came off a beauty so I'm quite happy," said the Spanish striker.
"I don't even know if it was my first touch or not. But the team did well."
While Rangers clinched the SPL title on the final day, Falkirk avoided the drop, and buoyed by that relief, John Hughes' men made it difficult for the newly-crowned champions for long periods.
"Falkirk are a good team as well, it's a team I've always really liked over the years," added former Raith and Dundee man Novo.
"They have a good manager who has made them play really good football. They were quite strong in the first half but struggled a little in the second half.
"We won the game and I'm pleased about that."