diff --git a/IntelFrameworkPkg/Include/Protocol/FrameworkHii.h b/IntelFrameworkPkg/Include/Protocol/FrameworkHii.h
index 1b22774367..17fc81a37b 100644
--- a/IntelFrameworkPkg/Include/Protocol/FrameworkHii.h
+++ b/IntelFrameworkPkg/Include/Protocol/FrameworkHii.h
@@ -30,6 +30,12 @@
 //
 #include <Protocol/GraphicsOutput.h>
 
+//
+// In both EDK and EDK II, incompatbile change is done to Framework HII protocol. 
+// This change should cause a change of GUID in both of code and HII spec. But we 
+// update the GUID in code in EDK and EDK II. The 0.92 spec is not updated. This
+// is a known issue..
+//
 #define EFI_HII_PROTOCOL_GUID \
   { \
     0xd7ad636e, 0xb997, 0x459b, {0xbf, 0x3f, 0x88, 0x46, 0x89, 0x79, 0x80, 0xe1} \