diff --git a/ndn-cpp/c/encoding/BinaryXMLName.h b/ndn-cpp/c/encoding/BinaryXMLName.h
index 58552c5..c943f4b 100644
--- a/ndn-cpp/c/encoding/BinaryXMLName.h
+++ b/ndn-cpp/c/encoding/BinaryXMLName.h
@@ -16,7 +16,7 @@
 
 char *ndn_encodeBinaryXMLName(struct ndn_Name *name, struct ndn_BinaryXMLEncoder *encoder);
 
-char *ndn_decodeBinaryXMLName(struct ndn_Name *name, unsigned char *input, unsigned int inputLength);
+char *ndn_decodeBinaryXMLName(struct ndn_Name *name, struct ndn_BinaryXMLDecoder *decoder);
 
 #ifdef	__cplusplus
 }