Craig Levein backed striker Ricardo Fuller after the Jamaican was booked for diving in Hearts' 1-1 draw with Dunfermline.
The on-loan hitman was constantly booed in the first half when he seemed to go down too easily on more than one occasion.
Levein insisted the former Charlton striker was no cheat, however.
"Challenges like that happen all the time - the crowd made a noise but I don't think he claimed for a penalty," he said.
"He says he's fed up with the kind of treatment he's been getting and I can fully understand how he feels.
"I encourage him to run at people because that's what he does best and it's just a shame people think he's diving if he goes down.
"It's driving him away because people keep branding him a cheat but he's not one."
Levin was a relieved man after Stephane Adam scored a 93rd minute equaliser to cancel out Scott Thomson's strike.
"We're happy to get something from the game because I think we were worthy of the points.
"We played fairly well and they seemed to relax a bit after they had scored - there was an edge to our play and credit must go to the lads for not giving up."