Index: uspace/lib/usbdev/include/usb/dev/poll.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/poll.h	(revision 4e732f1aa54271f1ae2860aba3864e766f33cddc)
+++ uspace/lib/usbdev/include/usb/dev/poll.h	(revision 585635856440deab73ad5891daab8fa87901aa68)
@@ -94,15 +94,15 @@
 typedef void (*usb_polling_terminted_callback_t)(usb_device_t *, bool, void *);
 
-int usb_device_auto_polling(usb_device_t *, usb_endpoint_t,
+extern int usb_device_auto_polling(usb_device_t *, usb_endpoint_t,
     const usb_device_auto_polling_t *, size_t);
 
-int usb_device_auto_poll(usb_device_t *, usb_endpoint_t,
+extern int usb_device_auto_poll(usb_device_t *, usb_endpoint_t,
     usb_polling_callback_t, size_t, int, usb_polling_terminted_callback_t, void *);
 
-int usb_device_auto_polling_desc(usb_device_t *,
+extern int usb_device_auto_polling_desc(usb_device_t *,
     const usb_endpoint_description_t *, const usb_device_auto_polling_t *,
     size_t);
 
-int usb_device_auto_poll_desc(usb_device_t *,
+extern int usb_device_auto_poll_desc(usb_device_t *,
     const usb_endpoint_description_t *, usb_polling_callback_t, size_t, int,
     usb_polling_terminted_callback_t, void *);
Index: uspace/lib/usbdev/include/usb/dev/recognise.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/recognise.h	(revision 4e732f1aa54271f1ae2860aba3864e766f33cddc)
+++ uspace/lib/usbdev/include/usb/dev/recognise.h	(revision 585635856440deab73ad5891daab8fa87901aa68)
@@ -50,4 +50,5 @@
 
 extern int usb_device_create_match_ids(usb_pipe_t *, match_id_list_t *);
+
 #endif