diff --git a/ndn-cpp/encoding/wire-format.hpp b/ndn-cpp/encoding/wire-format.hpp
index 02e7a8c..489415b 100644
--- a/ndn-cpp/encoding/wire-format.hpp
+++ b/ndn-cpp/encoding/wire-format.hpp
@@ -35,7 +35,7 @@
    * @throw logic_error for unimplemented if the derived class does not override.
    */
   virtual void 
-  decodeInterest(Interest& interest, const unsigned char *input, unsigned int inputLength);
+  decodeInterest(Interest& interest, const uint8_t *input, unsigned int inputLength);
 
   /**
    * Encode data and return the encoding.  Your derived class should override.
@@ -71,18 +71,18 @@
    * @param inputLength The number of bytes in input.
    * @param signedPortionBeginOffset Return the offset in the input buffer of the beginning of the signed portion.
    * If you are not decoding in order to verify, you can call 
-   * decodeData(Data& data, const unsigned char *input, unsigned int inputLength) to ignore this returned value.
+   * decodeData(Data& data, const uint8_t *input, unsigned int inputLength) to ignore this returned value.
    * @param signedPortionEndOffset Return the offset in the input buffer of the end of the signed portion.
    * If you are not decoding in order to verify, you can call 
-   * decodeData(Data& data, const unsigned char *input, unsigned int inputLength) to ignore this returned value.
+   * decodeData(Data& data, const uint8_t *input, unsigned int inputLength) to ignore this returned value.
    * @throw logic_error for unimplemented if the derived class does not override.
    */  
   virtual void 
   decodeData
-    (Data& data, const unsigned char *input, unsigned int inputLength, unsigned int *signedPortionBeginOffset, unsigned int *signedPortionEndOffset);
+    (Data& data, const uint8_t *input, unsigned int inputLength, unsigned int *signedPortionBeginOffset, unsigned int *signedPortionEndOffset);
 
   void 
-  decodeData(Data& data, const unsigned char *input, unsigned int inputLength)
+  decodeData(Data& data, const uint8_t *input, unsigned int inputLength)
   {
     unsigned int dummyBeginOffset, dummyEndOffset;
     decodeData(data, input, inputLength, &dummyBeginOffset, &dummyEndOffset);
@@ -105,7 +105,7 @@
    * @throw logic_error for unimplemented if the derived class does not override.
    */
   virtual void 
-  decodeForwardingEntry(ForwardingEntry& forwardingEntry, const unsigned char *input, unsigned int inputLength);
+  decodeForwardingEntry(ForwardingEntry& forwardingEntry, const uint8_t *input, unsigned int inputLength);
 
   /**
    * Set the static default WireFormat used by default encoding and decoding methods.