diff --git a/patterns/usb.hexpat b/patterns/usb.hexpat
index 9e7982d..e7f0bfd 100644
--- a/patterns/usb.hexpat
+++ b/patterns/usb.hexpat
@@ -143,7 +143,6 @@ struct DeviceDescriptor {
         u8 bDeviceSubClass;
     } else {
         u8 bDeviceSubClass;
-        u8 bDeviceSubClass;
     }
 };