Receiving the ball out on the right flank, Dabo found himself under pressure, but he made a mess of playing it back to his goalkeeper, Jeroen Houwen.
Nine times out of ten the pass back would have been successful but Dabo seemed to do the impossible- he guided his pass into the the back of the net.
To make matters worse, Vitesse had been leading in the match.
Groningen twice came from behind to end their five-match winless run with a 4-2 victory over Vitesse, and were helped on their way with the score at 1-0 to the visitors by defender Dabo.
Dabo, who has represented England at youth level, had been impressing on-loan before the incident and will hope to forget it as soon as possible.
It's been a good few weeks for the reputations of Chelsea's loan players.
Vitesse are now sixth in the Eredivisie after the loss, 14 points behind league leaders PSV.