It marked the Dane's first goal for the club - after 137 appearances.
"It was a proud moment, a big moment," Christensen told chelseafc.com, smiling. "I have waited nine years for this and now it has happened. It was a very nice moment for me personally, but it wouldn't have been worth it if we didn't win, so that's the most pleasing.
"I am very happy for my goal. Hopefully it doesn't take that long again to add a second!"
He also said: "I know a few of the [Malmo] players, and I know they have quality. They have a certain way of playing and we know that, we tried to expose that today.
"We know how they are used to not having the ball all the time and they have the quality to do it. I think we showed quality today.
"Overall it was a good game from us and it was important just to do things right for the whole game."
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