diff --git a/include/wincodecsdk.idl b/include/wincodecsdk.idl
index a3af55a2a6b..5cca0a5cb11 100644
--- a/include/wincodecsdk.idl
+++ b/include/wincodecsdk.idl
@@ -37,11 +37,13 @@ typedef enum WICMetadataCreationOptions {
 
 cpp_quote("DEFINE_GUID(GUID_MetadataFormatUnknown, 0xa45e592f,0x9078,0x4a7c,0xad,0xb5,0x4e,0xdc,0x4f,0xd6,0x1b,0x1f);")
 cpp_quote("DEFINE_GUID(GUID_MetadataFormatChunktEXt, 0x568d8936,0xc0a9,0x4923,0x90,0x5d,0xdf,0x2b,0x38,0x23,0x8f,0xbc);")
+cpp_quote("DEFINE_GUID(GUID_MetadataFormatIfd, 0x537396c6,0x2d8a,0x4bb6,0x9b,0xf8,0x2f,0x0a,0x8e,0x2a,0x3a,0xdf);")
 
 cpp_quote("DEFINE_GUID(CLSID_WICUnknownMetadataReader, 0x699745c2,0x5066,0x4b82,0xa8,0xe3,0xd4,0x04,0x78,0xdb,0xec,0x8c);")
 cpp_quote("DEFINE_GUID(CLSID_WICUnknownMetadataWriter, 0xa09cca86,0x27ba,0x4f39,0x90,0x53,0x12,0x1f,0xa4,0xdc,0x08,0xfc);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngTextMetadataReader, 0x4b59afcc,0xb8c3,0x408a,0xb6,0x70,0x89,0xe5,0xfa,0xb6,0xfd,0xa7);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngTextMetadataWriter, 0xb5ebafb9,0x253e,0x4a72,0xa7,0x44,0x07,0x62,0xd2,0x68,0x56,0x83);")
+cpp_quote("DEFINE_GUID(CLSID_WICIfdMetadataReader, 0x8f914656,0x9d0a,0x4eb2,0x90,0x19,0x0b,0xf9,0x6d,0x8a,0x9e,0xe6);")
 
 [
     object,