diff --git a/src/encoding/tlv-nfd.hpp b/src/encoding/tlv-nfd.hpp
index ba00cad..3cde88b 100644
--- a/src/encoding/tlv-nfd.hpp
+++ b/src/encoding/tlv-nfd.hpp
@@ -23,6 +23,7 @@
 #define NDN_ENCODING_TLV_NFD_HPP
 
 #include "../common.hpp"
+#include "nfd-constants.hpp"
 
 namespace ndn {
 namespace tlv {
@@ -94,13 +95,6 @@
 
 } // namespace nfd
 } // namespace tlv
-
-namespace nfd {
-
-static const uint64_t INVALID_FACE_ID = std::numeric_limits<uint64_t>::max();
-
-} // namespace nfd
-
 } // namespace ndn
 
 #endif // NDN_ENCODING_TLV_NFD_HPP