Index: uspace/lib/usb/include/usb/debug.h
===================================================================
--- uspace/lib/usb/include/usb/debug.h	(revision 019cff67b1d273e07778305dba7f81db87c94c27)
+++ uspace/lib/usb/include/usb/debug.h	(revision 5620bd439d14dda3836717e848fd17aef354ddf8)
@@ -79,5 +79,5 @@
 	usb_log_printf(USB_LOG_LEVEL_DEBUG2, format, ##__VA_ARGS__)
 
-const char *usb_debug_str_buffer(uint8_t *, size_t, size_t);
+const char *usb_debug_str_buffer(const uint8_t *, size_t, size_t);