Index: uspace/drv/usbhid/kbd/kbddev.c
===================================================================
--- uspace/drv/usbhid/kbd/kbddev.c	(revision 11d2e96af47b3ad84792b8fcdeb9f94a66d74b02)
+++ uspace/drv/usbhid/kbd/kbddev.c	(revision bbdf09e0177a12801c1f35b97859ac7d2904be10)
@@ -607,6 +607,6 @@
 	
 	if (count != kbd_dev->key_count) {
-		usb_log_warning("Number of received keycodes (%d) differs from"
-		    " expected number (%d).\n", count, kbd_dev->key_count);
+		usb_log_warning("Number of received keycodes (%zu) differs from"
+		    " expected (%zu).\n", count, kbd_dev->key_count);
 		return;
 	}
Index: uspace/drv/usbhid/usbhid.c
===================================================================
--- uspace/drv/usbhid/usbhid.c	(revision 11d2e96af47b3ad84792b8fcdeb9f94a66d74b02)
+++ uspace/drv/usbhid/usbhid.c	(revision bbdf09e0177a12801c1f35b97859ac7d2904be10)
@@ -197,5 +197,5 @@
 	size_t size = usb_hid_report_input_length(hid_dev->parser, usage_path, 
 	    mapping->compare);
-	usb_log_debug("Size of the input report: %d\n", size);
+	usb_log_debug("Size of the input report: %zuB\n", size);
 	
 	usb_hid_report_path_free(usage_path);