diff --git a/sys/conf/files b/sys/conf/files
index f55da9e3f972..860b1b224ac1 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -266,6 +266,11 @@ nfs/nfs_subs.c		optional nfs
 nfs/nfs_syscalls.c	optional nfs
 nfs/nfs_vfsops.c	optional nfs
 nfs/nfs_vnops.c		optional nfs
+pci/aic7870.c		optional ahc device-driver
+pci/if_de.c		optional de device-driver
+pci/ncr.c		optional ncr device-driver
+pci/pci.c		optional pci device-driver
+pci/pcisupport.c	optional pci
 scsi/cd.c		optional cd
 scsi/ch.c		optional ch
 scsi/scsi_base.c	optional scbus