Set Ticker useOffset to False in matplotlibrc

In the Ticker API docs the following is listed as a valid rc parameter:

axes.formatter.useoffset=False

Is there a way to put this in my matplotlibrc?

I have tried the obvious choice:

axes.formatter.useoffset : False

but that give the error

Bad key "axes.formatter.useoffset" 

upon importing matplotlib.

Thanks,

Julian