diff --git a/ndn-cpp/c/encoding/BinaryXMLEncoder.h b/ndn-cpp/c/encoding/BinaryXMLEncoder.h
index eb87602..66d28e7 100644
--- a/ndn-cpp/c/encoding/BinaryXMLEncoder.h
+++ b/ndn-cpp/c/encoding/BinaryXMLEncoder.h
@@ -85,6 +85,14 @@
  */
 ndn_Error ndn_BinaryXMLEncoder_writeBlobDTagElement(struct ndn_BinaryXMLEncoder *self, unsigned int tag, unsigned char *value, unsigned int valueLength);
 
+/**
+ * Write a UDATA header, then the value as an unsigned decimal int.
+ * @param self pointer to the ndn_BinaryXMLEncoder struct
+ * @param value the unsigned int
+ * @return 0 for success, else an error code
+ */
+ndn_Error ndn_BinaryXMLEncoder_writeUnsignedDecimalInt(struct ndn_BinaryXMLEncoder *self, unsigned int value);
+
 #ifdef	__cplusplus
 }
 #endif