Read all about Saturday's win here
Steve Lomas is winning over the Millwall fans – at least for the time being.
Six points in five days is the ideal end to a week that started with the Lions’ boss facing the sack after less than two months.
The supporters were calling for his head after their 5-1 home defeat by Derby.
But he was able to enjoy the cheers when he joined his players saluting the 3,000 who made the trip across South London.
He joked: "It's probably the first Sunday I can go and have a coffee and read the papers!"
Scott McDonald’s daisy-cutter wouldn't have troubled keeper Ben Hamer but for a wicked deflection off defender Dorian Dervite.
The Australian striker, who made his name at Celtic, has struggled to settle in since his summer move but finally got a bit of good fortune.
And it was enough to stretch Charlton's dreadful home record against their local rivals – they haven't won in 17 years – into another season.
Frustrated manager Chris Powell said: "We have to realise it's going to be a tough old season but we have to believe we can turn it around."
Scott McDonald is excited by the prospect of taking part in his first Millwall v Leeds game on Saturday after scoring the winner against Charlton.
The former Celtic striker grabbed his first Lions goal since completing a summer switch from Middlesbrough to maintain the Lions' excellent record against the Addicks.
And the Australian is now aiming to shoot down Leeds this weekend at The Den to ensure Millwall continue their sudden upturn in fortunes, a game the 30-year-old is already relishing.
McDonald said: "I'm looking forward to next week, it's a massive game Leeds. There's history there and there'll be a big crowd hopefully."
Three points at Charlton ensured back-to-back wins for Millwall after Tuesday's 3-1 success over Blackpool, the perfect ending for a week which began in disastrous fashion with that 5-1 drubbing at the hands of Derby County.
McDonald said: "It's funny how football works. It was important after the disappointment of last week we kept our heads together and had a chat.
We knew what we had to do, we needed to show a reaction, which we did on Tuesday.
We bounced back and produced a solid performance at Charlton.
At this club we've always shown after a disappointment there has been a reaction we have to show the fans what it means to us.
We're showing that now.
It's only the start of the season, you've got to work for your points and it'll be a very tough game against Leeds."
On a personal level, McDonald was also relieved to finally break his Millwall scoring duck.
He explained: "It feels good - on the big occasion as well, that I always like.
It took a little deflection but I've been working hard and I think I've been playing pretty well and deserved that bit of luck. Hopefully there's plenty more to come.
I've not had too many chances, but the ones I've had I've been disappointed not to have notched.
With the team winning games as well, with confidence you tend to get more chances as well."