Uefa chief refereeing officer Pierluigi Collina has admitted that Ukraine were wrongly denied a goal in their 1-0 defeat against England.
John Terry attempted to clear the ball from the under the bar following a shot from Marko Devic, but TV replays showed that the effort had crossed the goal-line.
Collina blamed human error for the wrong call, but insisted that the other two similar situations - in the group matches between Germany and Portugal and Italy and Croatia - were handled correctly.
"The ball crossed the line," the Italian said. "This was the third situation of this kind in the tournament. Unfortunately, this one was wrong."
The incident has reignited the debate over whether the introduction of five officials helps to prevent bad calls from being made.
"This is the only problem we have had," Collina noted. "It is one negative decision in three years of Champions League and two years of Europa League and 24 matches at the Euros.
"I would be very happy to know if the same questions would have been asked without yesterday's decision."
After the match, Fifa president Sepp Blatter wrote on Twitter that the introduction of goal-line technology 'is no longer an alternative but a necessity'.