diff --git a/sys/conf/majors b/sys/conf/majors
index 0bc8cbabbd61..7ba63a2d7124 100644
--- a/sys/conf/majors
+++ b/sys/conf/majors
@@ -175,7 +175,7 @@ chrdev	name		comments
 156	uscanner	USB Scanners <n_hibma>
 157	ar		ATA "pseudo" RAID device
 158	mly		Mylex RAID control device
-159	?
+159	ata		ATA control device
 160	spic		Sony Programmable I/O Controller (jogdial)
 200	??		entries from 200-252 are reserved for local use
 252	??		entries from 200-252 are reserved for local use