Disable ripple effect on Listview

I have a simple list containing some lists. Currently, to make the elements pulsate to the touch, I just added android:drawSelectorOnTop="true"

to the list.

This works great.

However, some list items are headers and should not show ripples because they have no action associated with them. How can I turn off the ripple effect for titles only?

The list contains line outputs for lines and headers.

I've tried the following in the title with no success:

• setting clickable
  
  to false
• setting listSelector
  
  to null.
• setting focusable
  
  to false.

Can anyone point me in the right direction?