Roberto Donadoni has defended referees and warned that continued criticism of officials will only increase tensions between them and clubs.
The Parma coach was speaking to reporters as he prepares his team to face Inter Milan on Monday when the question of refereeing errors was raised in light of the Milan club's recent protests.
Since bemoaning what they see as unfair punishment at the hands of officials the Nerazzurri have refused to speak publically but Donadoni sees things very differently.
He said: "These controversies are part of the game, even if I don't understand them and I prefer to stay out of them. If only somebody put together a dossier of situations that went in their own favour!
"If someone thinks that referees are acting in bad faith then they should just say it, otherwise they need to stay within the realms of an error. Referees can make mistakes just like a coach can get his starting line-up wrong and a striker can miss a goal.
"If people continue to protest in the way that we have been seeing then that will only see an increase in tension."