The signing appeared to re-ignite the bitterness between the two sets of fans, with no love lost between the East Midlands rivals.
Ward will have to win over the Forest support still, but owner Fawaz Al-Hasawi will not have improved relations at all between the two clubs after his comments on Twitter.
After welcoming Ward, along with Matt Mills, to the club, he took the ill-advised decision to respond to Derby County fans who had taken shots at him.
Al-Hasawi responded in cruel fashion, mocking Derby's late season collapse in 2014/15, and insisting Forest remain the bigger club.
And there was more to come, with Al-Hasawi reminding Derby fans of Bobby Zamora, the man whose play-off goal stopped them returning to the Premier League in 2014.
As a club chairman, simply being on Twitter makes Al-Hasawi a magnet for rival fans to poke fun at and mock when the opportunity comes along, but learning to ignore any jibes should come with the territory of responsibility.
It seems last night as though the Forest owner could not resist...