Index: uspace/lib/usb/src/debug.c
===================================================================
--- uspace/lib/usb/src/debug.c	(revision ff4185e6f53357568fd755520ab20fa510077b04)
+++ uspace/lib/usb/src/debug.c	(revision 275bf4564149c3cc7c77ddfb104ea8c6658f03b6)
@@ -281,5 +281,5 @@
  * @return Dumped buffer as a static (but fibril local) string.
  */
-const char *usb_debug_str_buffer(uint8_t *buffer, size_t size,
+const char *usb_debug_str_buffer(const uint8_t *buffer, size_t size,
     size_t dumped_size)
 {