diff --git a/ndn-cpp/c/encoding/binary-xml-data.c b/ndn-cpp/c/encoding/binary-xml-data.c
index b07b7a4..2925ee6 100644
--- a/ndn-cpp/c/encoding/binary-xml-data.c
+++ b/ndn-cpp/c/encoding/binary-xml-data.c
@@ -100,7 +100,7 @@
     return error;
   
   if ((error = ndn_BinaryXmlEncoder_writeOptionalBlobDTagElement
-      (encoder, ndn_BinaryXml_DTag_FinalBlockID, metaInfo->finalBlockID, metaInfo->finalBlockIDLength)))
+      (encoder, ndn_BinaryXml_DTag_FinalBlockID, metaInfo->finalBlockID.value, metaInfo->finalBlockID.valueLength)))
     return error;
  
   // This will skip encoding if there is no key locator.
@@ -159,7 +159,7 @@
     return error;
 
   if ((error = ndn_BinaryXmlDecoder_readOptionalBinaryDTagElement
-      (decoder, ndn_BinaryXml_DTag_FinalBlockID, 0, &metaInfo->finalBlockID, &metaInfo->finalBlockIDLength)))
+      (decoder, ndn_BinaryXml_DTag_FinalBlockID, 0, &metaInfo->finalBlockID.value, &metaInfo->finalBlockID.valueLength)))
     return error;
 
   if ((error = ndn_decodeOptionalBinaryXmlKeyLocator(&signature->keyLocator, decoder)))