Index: uspace/lib/usbdev/include/usb/dev/dp.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/dp.h	(revision 7363fc1269036e1480c17d10b371b5ec1de778fe)
+++ uspace/lib/usbdev/include/usb/dev/dp.h	(revision 5b401b9e8b5336b93736031665849df502c4680b)
@@ -79,6 +79,6 @@
     const usb_dp_parser_data_t *, const uint8_t *, const uint8_t *);
 
-void usb_dp_walk_simple(uint8_t *, size_t, const usb_dp_descriptor_nesting_t *,
-    walk_callback_t, void *);
+void usb_dp_walk_simple(const uint8_t *, size_t,
+    const usb_dp_descriptor_nesting_t *, walk_callback_t, void *);
 
 #endif