diff --git a/BaseTools/Source/C/Include/Common/UefiInternalFormRepresentation.h b/BaseTools/Source/C/Include/Common/UefiInternalFormRepresentation.h
index b0bd7c574c..b9fa8c39a6 100644
--- a/BaseTools/Source/C/Include/Common/UefiInternalFormRepresentation.h
+++ b/BaseTools/Source/C/Include/Common/UefiInternalFormRepresentation.h
@@ -728,6 +728,7 @@ typedef struct _EFI_IFR_QUESTION_HEADER {
 #define EFI_IFR_FLAG_READ_ONLY          0x01
 #define EFI_IFR_FLAG_CALLBACK           0x04
 #define EFI_IFR_FLAG_RESET_REQUIRED     0x10
+#define EFI_IFR_FLAG_REST_STYLE         0x20
 #define EFI_IFR_FLAG_RECONNECT_REQUIRED 0x40
 #define EFI_IFR_FLAG_OPTIONS_ONLY       0x80