diff --git a/chassishandler.hpp b/chassishandler.hpp
index 4d7d450..2957127 100644
--- a/chassishandler.hpp
+++ b/chassishandler.hpp
@@ -48,6 +48,7 @@
 enum class BootOptionParameter : size_t
 {
     setInProgress = 0x0,
+    bootFlagValidClr = 0x3,
     bootInfo = 0x4,
     bootFlags = 0x5,
     opalNetworkSettings = 0x61