How to disable building of -dbg Debian package?

Hello.

I'm building Linux kernel like this:

cp /boot/config-$(uname -r) ./.config
make olddefconfig
make -j4 deb-pkg LOCALVERSION=-custom

Resulting files are (for 4.7.0 kernel):

   966694 linux-firmware-image-4.7.0-custom_4.7.0-custom-1_amd64.deb
 10316460 linux-headers-4.7.0-custom_4.7.0-custom-1_amd64.deb
 45639036 linux-image-4.7.0-custom_4.7.0-custom-1_amd64.deb
471400164 linux-image-4.7.0-custom-dbg_4.7.0-custom-1_amd64.deb
   851664 linux-libc-dev_4.7.0-custom-1_amd64.deb

Compilation takes about an hour and most of this time is spent on
creating a -dbg package which I don't install anyway. Frankly I don't
think this package is very useful since Linux kernel can't be built
with -O0 option [1].

Is it possible to disable building of this package?

[1] https://lists.kernelnewbies.org/pipermail/kernelnewbies/2016-August/016687.html

-- 
Best regards,
Aleksander Alekseev
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