MK Dons boss Karl Robinson was adamant his side should have had a penalty towards the end of their goalless draw at Preston.
The Dons were denied what Robinson felt was a clear spot-kick six minutes from time when Preston keeper Thorsten Stuckmann appeared to clip striker Charlie MacDonald.
Robinson also accused opposite number Graham Westley and his coaching staff of trying to get MacDonald booked for diving in the immediate aftermath of the incident.
"How can that not be a penalty? The referee obviously thought it was because he looked to his assistant referee and he's kept his flag down," he said. "I'm sure they'll know they got it wrong.
"The Football League and the PGMO (Professional Game Match Officials) are really supportive of moving forward as a group of referees but unfortunately they got that one wrong.
"What I've never seen is coaching staff running five yards waving imaginary cards in the fourth official's face. Gamesmanship, sportsmanship, class - that is not good gamesmanship from Preston's coaching staff.
"Sometimes I get carried away - I'm still young and I'm still learning - and my wife tells me off and I have to apologise for my antics. But I've never done that. But it's happened now and I'm sure they're disappointed in themselves as well."
Westley brushed aside not only Robinson's accusations of gamesmanship from his coaching staff but also the significance of either penalty shout.
"I don't care what their manager says. He's not important to me. What's important to me is my players and their performance," said Westley.
"What's important to me is the progress of Preston North End and what's important to me is us becoming a team that wins games on a consistent basis."