The NRL has fined the Dragons for comments made by coach Paul McGregor at a press conference last weekend.
Particularly, the NRL weren't impressed with comments that match officials were "embarrassing" and "incompetent".
“In simple terms, the rule is that coaches, players and officials should not discuss referees and their performances in the public domain,” NRL Head of Football Brian Canavan said, according to a statement from the NRL.
“We have been pragmatic in dealing with instances where comments have been made but the competence and integrity of referees has not been questioned.
“But it is our view that these particular comments crossed the line.
“All coaches should be aware that they risk sanctions if they discuss the performance of referees.”