Green Manalishi - Mistake?

[HomerMcvie]

http://www.youtube.com/watch?v=kTvKaLW5bu8
I was listening on GM on the way home from a gig tonight, and had to play it over and over(no pun intended).
At 1:42 ish... I SWEAR where John plays the rundown from the D, that the C he plays is a mistake. It should be a C#(IMHO), and they just left it on the recording, or didn't notice, or....?
Sorry, that note was driving me crazy(and it's a short trip), that I kept playing it over again and again....
Your thoughts?