diff --git a/src/add-ons/kernel/bus_managers/usb/usbspec_private.h b/src/add-ons/kernel/bus_managers/usb/usbspec_private.h
index 8d6f1c4d16..8123389e8a 100644
--- a/src/add-ons/kernel/bus_managers/usb/usbspec_private.h
+++ b/src/add-ons/kernel/bus_managers/usb/usbspec_private.h
@@ -16,7 +16,7 @@
 
 #define USB_MAX_AREAS					8
 #define USB_MAX_FRAGMENT_SIZE			B_PAGE_SIZE * 96
-#define USB_MAX_PORT_COUNT				16
+#define USB_MAX_PORT_COUNT				255
 
 #define USB_DELAY_BUS_RESET				100000
 #define USB_DELAY_HUB_POWER_UP			200000