The away side continued to dominate proceedings with captain Darren Barr heading over an O'Brien corner that had been needlessly conceded by Langfield.
BBC: Aberdeen 2-1 Falkirk
2.
Pwysleisiodd Dr Barr, ers 2002 mae'r canran o enedigaethau yng Nghymru wedi cynyddu 20%.
BBC: Pwyllgor Plant a Phobl Ifanc
3.
Olejnik then got down well to block Jim O'Brien's powerful effort at his near post after the winger had turned Darren Barr.