Incorrect Parameters given on webpage - Compiling a New Kernel

https://www.debian.org/releases/jessie/i386/ch08s06.html.en

Webpage quote:

"Now compile the kernel: fakeroot make-kpkg --initrd -- revision=custom.1.0
kernel_image"

Running the above command results in the following error output:

Error: The revision string may only contain
alphanumerics and  the  characters ~ +  .
If epochs are used, the colon : is also allowed
The current value is: custom.1.0
Aborting.

Upon checking make-kpkg --help it states the following,

"--revision number     The debian revision number. ([0-9][a-zA-Z.~+0-9])
(Must start with a digit)"

The correct text on the website should be changed to,

"Now compile the kernel: fakeroot make-kpkg --initrd -- revision=1.0.custom
kernel_image"

The kernel compilation now goes through successfully.