diff --git a/firmware/libcommon/source/usb.c b/firmware/libcommon/source/usb.c
index f6800d49..db4d1c8d 100644
--- a/firmware/libcommon/source/usb.c
+++ b/firmware/libcommon/source/usb.c
@@ -567,9 +567,9 @@ const USBDeviceDescriptor deviceDescriptor = {
 	.bLength		= sizeof(USBDeviceDescriptor),
 	.bDescriptorType	= USBGenericDescriptor_DEVICE,
 	.bcdUSB			= USBDeviceDescriptor_USB2_00,
-	.bDeviceClass		= 0xff,
-	.bDeviceSubClass	= 0xff,
-	.bDeviceProtocol	= 0xff,
+	.bDeviceClass		= 0,
+	.bDeviceSubClass	= 0,
+	.bDeviceProtocol	= 0,
 	.bMaxPacketSize0	= BOARD_USB_ENDPOINTS_MAXPACKETSIZE(0),
 	.idVendor		= BOARD_USB_VENDOR_ID,
 	.idProduct		= BOARD_USB_PRODUCT_ID,