AC Milan fans staged another protest against the way the club is being run during Wednesday's 3-1 home defeat by Genoa.
Supporters in the Curva Sud stand of the San Siro formed the word 'basta', which is Italian for "enough".
Rossoneri fans previously boycotted March's 3-1 home win over Cagliari.
They are frustrated with a lack of clarity from owner Silvio Berlusconi over his future plans for the club, who lie 10th in Serie A.
AC Milan have won 18 Serie A titles and seven European Cups but finished eighth last season, failing to qualify for the Champions League - and are on course for a similar finish this term.
Wednesday's loss was Milan's 10th of the campaign and their second in a row following the 2-1 defeat by Udinese last Saturday.
Andrea Bertolacci and M'baye Niang gave Genoa a 2-0 lead before Philippe Mexes pulled back but Iago Falque's last-minute penalty sealed the points for the visitors.
The loss puts further pressure on manager Filippo Inzaghi amid reports Berlusconi is set to sell the club to Thai businessman Bee Taechaubol.