How to ignore HDMI power on-off?

Hi guys,
I’m using HDMI CEC but I’d like to turn on the option for ignoring other HDMI features (on-off?) becuase sometimes my TV switch to the OSMC if I reboot my Raspy via ssh and it happens to me that my Sony amply goes crazy changing the source…
Is it possible? I can’t find the option…

Settings->System->Input devices->CEC. Turn off the second option in the list.

Oh… thanks!

Hi, I did this but it didn’t work.
I have the RPI connected to my amp and this one to the TV.
When I turn on the TV and the source on my amp is any other than the RPI it switches to it.
I would like to avoid that. Is it possible?