20 mhz capacitor

I am in the process of making Nigel's Main board #3 for 16f877A pic. The closest capacitors I have for the 20mhz crystal circuit is 80pf. Since it calls for a 12 pf caps, would the 80 pf work or is it just too far from the 12 pf to work properly. Thanks for any info I may receive.

All my boards have 22pf..... I use 10, 16 and 20mhz crystals..... 80pf is a bit high... But if you have nothing else... try them... All that can happen is the chip won't start..