diff --git a/MdePkg/Include/Uefi/UefiSpec.h b/MdePkg/Include/Uefi/UefiSpec.h
index 2fb6ea00ab..909b8a109d 100644
--- a/MdePkg/Include/Uefi/UefiSpec.h
+++ b/MdePkg/Include/Uefi/UefiSpec.h
@@ -1750,6 +1750,7 @@ EFI_STATUS
 #define EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED  0x0000000000000004
 #define EFI_OS_INDICATIONS_FMP_CAPSULE_SUPPORTED            0x0000000000000008
 #define EFI_OS_INDICATIONS_CAPSULE_RESULT_VAR_SUPPORTED     0x0000000000000010
+#define EFI_OS_INDICATIONS_START_PLATFORM_RECOVERY          0x0000000000000040
 
 //
 // EFI Runtime Services Table