diff --git a/BaS_gcc/sources/sysinit.c b/BaS_gcc/sources/sysinit.c
index 9422aa7..79e89e3 100644
--- a/BaS_gcc/sources/sysinit.c
+++ b/BaS_gcc/sources/sysinit.c
@@ -527,7 +527,7 @@ void init_usb(void)
 
 			if (class >> 16 == PCI_CLASS_SERIAL_USB)
 			{
-				xprintf("serial USB found at #%d\r\n", handle);
+				xprintf("serial USB found at #%x\r\n", handle);
 				if (class >> 8 == PCI_CLASS_SERIAL_USB_EHCI)
 				{
 					board = ehci_usb_pci_table;