Mako doesn't change the font size

I have a simple configuration file ~/.config/mako/config

border-size=1
border-radius=8

font='JetBrainsMonoNerdFont Regular 24pt'

max-history=10
default-timeout=5000

Looks like mako doesnt't get the font size value from the font parameter, or it gets the size, but it doesn't set it.
Because I tried lots of different values of the size, and the result was the same all the time.
By the way, changing font itself works fine. I was able to change the default font of notifications to JetBrains Mono Nerd Font, but the size of the font didn't change.