Index: uspace/lib/usbhid/include/usb/hid/usages/consumer.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/usages/consumer.h	(revision 069b80df6051b3f6d410982fb4a073aa066e7052)
+++ uspace/lib/usbhid/include/usb/hid/usages/consumer.h	(revision 4578a6eddb5caa32837573ce3c101eac5cdfa8ec)
@@ -37,5 +37,5 @@
 #define LIBUSBHID_CONSUMER_H_
 
-const char *usbhid_multimedia_usage_to_str(int usage);
+const char *usbhid_multimedia_usage_to_str(unsigned usage);
 
 #endif /* LIBUSBHID_CONSUMER_H_ */