Index: uspace/lib/usb/src/usb.c
===================================================================
--- uspace/lib/usb/src/usb.c	(revision daec5e040866d98092cd5eb8a58caf8a53168566)
+++ uspace/lib/usb/src/usb.c	(revision 1d115c89491fe594b5d621d05541baa979cab204)
@@ -31,5 +31,5 @@
  */
 /** @file
- * @brief Base USB types.
+ * Common USB functions.
  */
 #include <usb/usb.h>
@@ -37,5 +37,9 @@
 
 
-/** String representation for USB transfer type. */
+/** String representation for USB transfer type.
+ *
+ * @param t Transfer type.
+ * @return Transfer type as a string (in English).
+ */
 const char * usb_str_transfer_type(usb_transfer_type_t t)
 {