Inter Milan coach Luciano Spalletti was left angered after their 1-1 draw with SPAL.
The Nerazzurri are without a win in seven Serie A games now and had been gifted the opener by a Francesco Vicari own goal, but Alberto Paloschi nodded in at the 91st minute.
“Clearly when you concede a goal like that in stoppages, it leaves a bitter taste in the mouth," Spalletti told Mediaset Premium.
“We certainly have a lot more work to do. I wouldn't say I'm worried. I haven't seen particular improvements even from when we had that winning streak, as we always had these blackouts where we lost the ball in banal fashion and didn't fight back.
“We can't find a balance of behaviour and homogenous mentality. Until we do that, we won't go far."