diff --git a/ndn-cpp/c/encoding/BinaryXMLInterest.h b/ndn-cpp/c/encoding/BinaryXMLInterest.h
index 38917aa..9a58b78 100644
--- a/ndn-cpp/c/encoding/BinaryXMLInterest.h
+++ b/ndn-cpp/c/encoding/BinaryXMLInterest.h
@@ -8,6 +8,8 @@
 
 #include "../errors.h"
 #include "../Interest.h"
+#include "BinaryXMLEncoder.h"
+#include "BinaryXMLDecoder.h"
 
 #ifdef	__cplusplus
 extern "C" {