1 files changed, 2 insertions, 1 deletions
diff --git a/MdePkg/Include/Pi/PiFirmwareVolume.h b/MdePkg/Include/Pi/PiFirmwareVolume.h
index 1f622bb9ba..22905894a4 100644
--- a/MdePkg/Include/Pi/PiFirmwareVolume.h
+++ b/MdePkg/Include/Pi/PiFirmwareVolume.h
@@ -211,7 +211,8 @@ typedef struct {
 #define EFI_FV_EXT_TYPE_GUID_TYPE 0x0002
 
 ///
-/// This extension header provides a mapping between a GUID and an OEM file type.
+/// This extension header EFI_FIRMWARE_VOLUME_EXT_ENTRY_GUID_TYPE provides a vendor specific
+/// GUID FormatType type which includes a length and a successive series of data bytes.
 ///
 typedef struct {
   ///