diff --git a/ndn-cpp/forwarding-entry.hpp b/ndn-cpp/forwarding-entry.hpp
index 73a9484..6884a08 100644
--- a/ndn-cpp/forwarding-entry.hpp
+++ b/ndn-cpp/forwarding-entry.hpp
@@ -39,7 +39,7 @@
   }
   
   void 
-  wireDecode(const uint8_t *input, unsigned int inputLength, WireFormat& wireFormat = *WireFormat::getDefaultWireFormat()) 
+  wireDecode(const uint8_t *input, size_t inputLength, WireFormat& wireFormat = *WireFormat::getDefaultWireFormat()) 
   {
     wireFormat.decodeForwardingEntry(*this, input, inputLength);
   }