diff --git a/src/machine/usb/descriptor.go b/src/machine/usb/descriptor.go
index 6435c2b5..17bf0770 100644
--- a/src/machine/usb/descriptor.go
+++ b/src/machine/usb/descriptor.go
@@ -75,7 +75,7 @@ var DescriptorCDCHID = Descriptor{
 			// keyboard and mouse
 			0x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x85, 0x02, 0x05, 0x07, 0x19, 0xe0, 0x29, 0xe7, 0x15, 0x00,
 			0x25, 0x01, 0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x95, 0x01, 0x75, 0x08, 0x81, 0x03, 0x95, 0x06,
-			0x75, 0x08, 0x15, 0x00, 0x25, 0x73, 0x05, 0x07, 0x19, 0x00, 0x29, 0x73, 0x81, 0x00, 0xc0, 0x05,
+			0x75, 0x08, 0x15, 0x00, 0x25, 0xFF, 0x05, 0x07, 0x19, 0x00, 0x29, 0xFF, 0x81, 0x00, 0xc0, 0x05,
 			0x01, 0x09, 0x02, 0xa1, 0x01, 0x09, 0x01, 0xa1, 0x00, 0x85, 0x01, 0x05, 0x09, 0x19, 0x01, 0x29,
 			0x03, 0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 0x01, 0x81, 0x02, 0x95, 0x01, 0x75, 0x05, 0x81,
 			0x03, 0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 0x09, 0x38, 0x15, 0x81, 0x25, 0x7f, 0x75, 0x08, 0x95,