diff --git a/drivers/firewire/nosy-user.h b/drivers/firewire/nosy-user.h
index ebef97f..e48aa62 100644
--- a/drivers/firewire/nosy-user.h
+++ b/drivers/firewire/nosy-user.h
@@ -17,9 +17,9 @@
 /*
  * Format of packets returned from the kernel driver:
  *
- *   quadlet with timestamp (microseconds)
- *   quadlet padded packet data...
- *   quadlet with ack
+ *	quadlet with timestamp		(microseconds, CPU endian)
+ *	quadlet-padded packet data...	(little endian)
+ *	quadlet with ack		(little endian)
  */
 
 #endif /* __nosy_user_h */