diff --git a/Documentation/ioctl-number.txt b/Documentation/ioctl-number.txt
index 1c6b545..f8deb85 100644
--- a/Documentation/ioctl-number.txt
+++ b/Documentation/ioctl-number.txt
@@ -110,6 +110,8 @@
 'W'	00-1F	linux/wanrouter.h	conflict!
 'X'	all	linux/xfs_fs.h
 'Y'	all	linux/cyclades.h
+'['	00-07	linux/usb/usbtmc.h	USB Test and Measurement Devices
+					<mailto:gregkh@suse.de>
 'a'	all				ATM on linux
 					<http://lrcwww.epfl.ch/linux-atm/magic.html>
 'b'	00-FF				bit3 vme host bridge