diff --git a/MdePkg/Include/Protocol/HiiImageDecoder.h b/MdePkg/Include/Protocol/HiiImageDecoder.h
index 48a1a976ed..34eb5e17c2 100644
--- a/MdePkg/Include/Protocol/HiiImageDecoder.h
+++ b/MdePkg/Include/Protocol/HiiImageDecoder.h
@@ -18,15 +18,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include <Protocol/HiiImage.h>
 
-
-//
-// In UEFI 2.6 spec,this guid value is duplicate with
-// EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID. Now update this guid value to
-// avoid the duplicate guid issue. So its value is not consistent with
-// UEFI spec definition now. We have proposed to update UEFI spec to
-// use this new guid. After new spec released, we will remove this
-// comments.
-//
 #define EFI_HII_IMAGE_DECODER_PROTOCOL_GUID \
   {0x9e66f251, 0x727c, 0x418c, { 0xbf, 0xd6, 0xc2, 0xb4, 0x25, 0x28, 0x18, 0xea }}
 
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index 7a7504b7a3..1ae1fbcc0d 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -1642,14 +1642,6 @@
   gEfiRamDiskProtocolGuid              = { 0xab38a0df, 0x6873, 0x44a9, { 0x87, 0xe6, 0xd4, 0xeb, 0x56, 0x14, 0x84, 0x49 }}
 
   ## Include/Protocol/ImageDecoder.h
-  ##
-  ## In UEFI 2.6 spec,this guid value is duplicate with
-  ## EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_GUID. Now update this guid value to
-  ## avoid the duplicate guid issue. So its value is not consistent with
-  ## UEFI spec definition now. We have proposed to update UEFI spec to
-  ## use this new guid. After new spec released, we will remove this
-  ## comments.
-  ##
   gEfiHiiImageDecoderProtocolGuid      = { 0x9e66f251, 0x727c, 0x418c, { 0xbf, 0xd6, 0xc2, 0xb4, 0x25, 0x28, 0x18, 0xea }}
 
   ## Include/Protocol/HiiImageEx.h