diff --git a/sys/conf/majors b/sys/conf/majors
index f857c8f6725a..363ce79b16fd 100644
--- a/sys/conf/majors
+++ b/sys/conf/majors
@@ -162,5 +162,7 @@ chrdev	name		comments
 143	urio		USB Rio 500 <n_hibma>
 144	nsmb		SMB/CIFS protocol interface <bp>
 145	dri		DRI Graphics for OpenGL <dfr>
+146	twe		3ware Escalade ATA RAID (controller)
+147	twed		3ware Escalade ATA RAID (drives)
 200	??		entries from 200-255 are reserved for local use
 255	??		entries from 200-255 are reserved for local use