diff --git a/ChangeLog b/ChangeLog
index aa7518ca..cb1d4dea 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-06-13  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Made DHTNode::getIPAddress() return const reference.
+	* src/DHTNode.h
+
 2010-06-12  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Renamed member variables
diff --git a/src/DHTNode.h b/src/DHTNode.h
index aa78f409..1418c956 100644
--- a/src/DHTNode.h
+++ b/src/DHTNode.h
@@ -77,7 +77,7 @@ public:
     _rtt = millisec;
   }
 
-  std::string getIPAddress() const
+  const std::string& getIPAddress() const
   {
     return _ipaddr;
   }