diff --git a/sys/dev/usb/misc/udbp.h b/sys/dev/usb/misc/udbp.h
index eb2c27d5f9e..a12cc739ef8 100644
--- a/sys/dev/usb/misc/udbp.h
+++ b/sys/dev/usb/misc/udbp.h
@@ -63,7 +63,7 @@ struct ngudbpstat {
 
 /*
  * This is used to define the 'parse type' for a struct ngudbpstat, which
- * is bascially a description of how to convert a binary struct ngudbpstat
+ * is basically a description of how to convert a binary struct ngudbpstat
  * to an ASCII string and back.  See ng_parse.h for more info.
  *
  * This needs to be kept in sync with the above structure definition
diff --git a/sys/dev/usb/serial/uftdi_reg.h b/sys/dev/usb/serial/uftdi_reg.h
index 80936f80b6f..19794413cf2 100644
--- a/sys/dev/usb/serial/uftdi_reg.h
+++ b/sys/dev/usb/serial/uftdi_reg.h
@@ -8,7 +8,7 @@
  * USB on the other.
  *
  * Thanx to FTDI (http://www.ftdi.co.uk) for so kindly providing details
- * of the protocol required to talk to the device and ongoing assistence
+ * of the protocol required to talk to the device and ongoing assistance
  * during development.
  *
  * Bill Ryder - bryder@sgi.com of Silicon Graphics, Inc. is the original