diff --git a/src/chat-message.hpp b/src/chat-message.hpp
index 432fac9..860ce9f 100644
--- a/src/chat-message.hpp
+++ b/src/chat-message.hpp
@@ -88,7 +88,7 @@
 private:
   template<bool T>
   size_t
-  wireEncode(ndn::EncodingImpl<T>& block) const;
+  wireEncode(ndn::EncodingImpl<T>& encoder) const;
 
 private:
   mutable Block m_wire;