Index: uspace/lib/usbdev/include/usb/dev/device.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/device.h	(revision d1582b502edcb7bfeef771a2019538f265e7e27c)
+++ uspace/lib/usbdev/include/usb/dev/device.h	(revision a6625c98dc61fa3ce3d1c863ba6a7cb12cb1eacf)
@@ -91,5 +91,5 @@
 
 usb_address_t usb_device_get_address(const usb_device_t *);
-usb_speed_t usb_device_get_depth(const usb_device_t *);
+unsigned usb_device_get_depth(const usb_device_t *);
 usb_speed_t usb_device_get_speed(const usb_device_t *);
 int usb_device_get_iface_number(const usb_device_t *);