diff --git a/daemon/face/udp-channel.hpp b/daemon/face/udp-channel.hpp
index da2b14b..bcefd8b 100644
--- a/daemon/face/udp-channel.hpp
+++ b/daemon/face/udp-channel.hpp
@@ -157,7 +157,7 @@
    **/
   shared_ptr<boost::asio::ip::udp::socket> m_socket;
 
-  uint8_t m_inputBuffer[MAX_NDN_PACKET_SIZE];
+  uint8_t m_inputBuffer[ndn::MAX_NDN_PACKET_SIZE];
 
   typedef std::map< udp::Endpoint, shared_ptr<UdpFace> > ChannelFaceMap;
   ChannelFaceMap m_channelFaces;