Zakuani told BBC Radio Cambridgeshire: "I was dropped, but you just have to get on with it and now I'm back in I just want to keep my place."
Despite his fitness problems Zakuani has started 28 league games for Posh so far this season.
"I had quite a long run in the team and then I got dropped, but I'm back now and I just want to kick on," he added.
Posh are currently just a point off the League One play-offs and Zakuani believes the victory over Rochdale was a return to the level they were at earlier in the season.
"I put in a shift in the win over Rochdale, I was happy with how we played and the confidence is definitely back now," he said.
"That result has given everyone a lift and we've now got something to hold onto and build on."
Source: BBC Sport
Source: BBC Sport