Leaders MK Dons extended their unbeaten start to the League One season to six games with victory at Carlisle.
Charlie MacDonald headed in Darren Potter's cross for his third goal in three games to put the Dons ahead.
Dean Bowditch tapped in Stephen Gleeson's pass to double the lead before Lee Miller gave Carlisle hope by heading in James Berrett's free-kick.
But Dean Lewington sealed victory by firing past Carlisle keeper Adam Collin after a one-two with MacDonald.
VIEWS FROM THE DRESSING ROOM
Carlisle United boss Greg Abbott told BBC Radio Cumbria:
"They looked like a group that were slightly down on themselves and feeling a bit sorry for themselves.
"We have got to regroup quickly and I think as a group and a dressing room everybody has got to help each other to work their way out of a situation like that.
"Some of the players there have waited for things, we seem to wait for things to happen on the pitch, we seem to be second best to certain things."
MK Dons manager Karl Robinson told BBC Three Counties Radio:
"I am so proud of the fact that we can come and play football in that style. It just shows you how far we have come. But it is still very early days.
"When they (Carlisle) start turning it on, the crowd here are deafening. It is difficult.
"When we select our players, we select them very carefully. They were able to come in and look like they had been here all season and that is the most pleasing thing for me."