diff --git a/MdePkg/Include/IndustryStandard/SmBios.h b/MdePkg/Include/IndustryStandard/SmBios.h
index c9eb8f7ba1..694ee3361b 100644
--- a/MdePkg/Include/IndustryStandard/SmBios.h
+++ b/MdePkg/Include/IndustryStandard/SmBios.h
@@ -2245,6 +2245,7 @@ typedef union {
   SMBIOS_TABLE_TYPE39   *Type39;
   SMBIOS_TABLE_TYPE40   *Type40;
   SMBIOS_TABLE_TYPE41   *Type41;
+  SMBIOS_TABLE_TYPE42   *Type42;
   SMBIOS_TABLE_TYPE126  *Type126;
   SMBIOS_TABLE_TYPE127  *Type127;
   UINT8                 *Raw;