diff --git a/sdk/xtdk/amd64/artypes.h b/sdk/xtdk/amd64/artypes.h
index 58984d9..ae187e4 100644
--- a/sdk/xtdk/amd64/artypes.h
+++ b/sdk/xtdk/amd64/artypes.h
@@ -430,6 +430,7 @@ typedef VOID (*PINTERRUPT_HANDLER)(PKTRAP_FRAME TrapFrame);
 /* Processor identification information */
 typedef struct _CPU_IDENTIFICATION
 {
+    ULONGLONG ExtendedFeatureBits;
     USHORT Family;
     ULONGLONG FeatureBits;
     USHORT Model;
diff --git a/sdk/xtdk/i686/artypes.h b/sdk/xtdk/i686/artypes.h
index cce90ec..c3e335b 100644
--- a/sdk/xtdk/i686/artypes.h
+++ b/sdk/xtdk/i686/artypes.h
@@ -395,6 +395,7 @@ typedef VOID (*PINTERRUPT_HANDLER)(PKTRAP_FRAME TrapFrame);
 /* Processor identification information */
 typedef struct _CPU_IDENTIFICATION
 {
+    ULONGLONG ExtendedFeatureBits;
     USHORT Family;
     ULONGLONG FeatureBits;
     USHORT Model;