diff --git a/drivers/staging/comedi/drivers/ni_usb6501.c b/drivers/staging/comedi/drivers/ni_usb6501.c
index 5036eebb9162ef90bd4faaf4eb7508a6926f762a..9a0a96329a55083f158b59110fb2244272400dd3 100644
--- a/drivers/staging/comedi/drivers/ni_usb6501.c
+++ b/drivers/staging/comedi/drivers/ni_usb6501.c
@@ -45,7 +45,7 @@
  *	byte 3 is the total packet length
  *
  *	byte 4 is always 00
- *	byte 5 is is the total packet length - 4
+ *	byte 5 is the total packet length - 4
  *	byte 6 is always 01
  *	byte 7 is the command
  *