Aaron McLean played a neat one-two with Rene Howe on the edge of the box and drilled his seventh goal of the season to put the visitors ahead.

But Mark Wright stroked Jemal Johnson's low cross in from 10 yards for his first before side-stepping keeper Shwan Jalal and firing MK Dons into the lead.

Colin Cameron slotted home Scott Taylor's cross to seal the win.

Milton Keynes Dons: Gueret, Stirling, O'Hanlon, Swailes, Lewington, Wright (Carayol 87), Cameron, Howell (Edds 58), Smart, Broughton (Taylor 81), Johnson.
Subs Not Used: Abbey, Murphy.

Goals: Wright 25, 52, Cameron 85.

Peterborough: Jalal, Gnakpa, Westwood, Charnock, Blanchett, Whelpdale (Day 46), Strachan, Hyde (Lee 64), Boyd, Mclean (Mackail-Smith 64), Howe.
Subs Not Used: Tyler, Gaughran.

Goals: Mclean 16.

Att: 5,087.