diff --git a/sys/conf/majors b/sys/conf/majors
index 6cd962e3af04..24b89d773e08 100644
--- a/sys/conf/majors
+++ b/sys/conf/majors
@@ -148,7 +148,6 @@
 146	*twe		3ware Escalade ATA RAID (controller)
 148	*agp		AGP <dfr>
 149	*tap		Ethernet tunneling device <myevmenkin@att.com>
-150	*aac		Adaptec FSA RAID (controller)
 152	*acpi		ACPI bios support (Takanori Watanabe takawata@shidahara1.planet.sci.kobe-u.ac.jp)
 153	*ti		Tigon Gigabit Ethernet driver (ken@FreeBSD.ORG)
 154	*asr		Adaptec SCSI RAID <msmith@freebsd.org>