diff --git a/ndn-cpp/encoding/BinaryXMLEncoder.h b/ndn-cpp/encoding/BinaryXMLEncoder.h
index cb20787..e606dee 100644
--- a/ndn-cpp/encoding/BinaryXMLEncoder.h
+++ b/ndn-cpp/encoding/BinaryXMLEncoder.h
@@ -34,6 +34,8 @@
   self->offset = 0;
 }
 
+char *ndn_BinaryXMLEncoder_encodeTypeAndValue(struct ndn_BinaryXMLEncoder *self, unsigned int type, unsigned int value);
+
 #ifdef	__cplusplus
 }
 #endif