Problems with remove page numbering

[Jefferson dos Santos Felix]

Now I have compiled the last version of Lilypond (2.3.8), but the 
problem continue...

I created the  follow example:

\bookpaper {
   printpagenumber = ##f
}

\notes {
   \repeat unfold 50 {
       c'1 \break
   }
}

but lilypond insists to print page numbers...
Is there anything wrong?

Thanks
Jeff