diff --git a/sys/man/8/kbdfs b/sys/man/8/kbdfs
index 5b6844c28..7dc206afc 100644
--- a/sys/man/8/kbdfs
+++ b/sys/man/8/kbdfs
@@ -175,7 +175,7 @@ take effect on newly pressed keys.
 .PP
 Raw scancodes can be written to the
 .BR kbin
-file for external keyboard input (used for usb keyboards).
+file for external keyboard input (used for USB keyboards).
 .SS "Keyboard map"
 Scancodes are maped to Unicode characters with a number of
 translation tables. These tables can be accessed with the