///\r
/// Size of SMM communicate header, without including the payload.\r
///\r
-#define SMM_COMMUNICATE_HEADER_SIZE (OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data))\r
+#define SMM_COMMUNICATE_HEADER_SIZE (OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data))\r
\r
///\r
/// Size of SMM FTW communicate function header, without including the payload.\r