diff --git a/src/data.hpp b/src/data.hpp
index 3cccc16..2f56dfc 100644
--- a/src/data.hpp
+++ b/src/data.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -97,9 +97,9 @@
    *                                blocks will be encoded into the block. Note that there
    *                                will be no outer TLV header of the Data packet.
    */
-  template<bool T>
+  template<encoding::Tag TAG>
   size_t
-  wireEncode(EncodingImpl<T>& block, bool wantUnsignedPortionOnly = false) const;
+  wireEncode(EncodingImpl<TAG>& block, bool wantUnsignedPortionOnly = false) const;
 
   /**
    * @brief Encode to a wire format