Wayne Riley scored the only goal as Northwich Victoria sent League One Charlton crashing out of the FA Cup.
Riley struck with nine minutes remaining for the Blue Square North side.
Drewe Broughton got a late winner for Rotherham as they won 3-2 at Wealdstone.
Adam Le Fondre and Kevin Ellison had put Rotherham two up before Ryan Ashe struck twice to level the match.
Broughton netted the winner with eight minutes remaining.
Ryan Austin headed a last-minute winner as Burton Albion beat Oxford City 3-2.
Shaun Harrad, with a penalty, and Jacques Maghoma scored Burton's other goals, with Michael Alexis and Jamie Brooks scoring for Oxford.
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