diff --git a/ChangeLog b/ChangeLog
index fdce4e1d..d70cd3d7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-08-14  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Added debug log
+	* src/DHTPeerLookupTask.cc
+
 2010-08-14  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Initialized cur_ with values_.end()
diff --git a/src/DHTPeerLookupTask.cc b/src/DHTPeerLookupTask.cc
index 938ff644..ff3065a5 100644
--- a/src/DHTPeerLookupTask.cc
+++ b/src/DHTPeerLookupTask.cc
@@ -92,6 +92,10 @@ SharedHandle<DHTMessageCallback> DHTPeerLookupTask::createCallback()
 
 void DHTPeerLookupTask::onFinish()
 {
+  if(getLogger()->debug()) {
+    getLogger()->debug("Peer lookup for %s finished",
+                       util::toHex(getTargetID(), DHT_ID_LENGTH).c_str());
+  }
   // send announce_peer message to K closest nodes
   size_t num = DHTBucket::K;
   for(std::deque<SharedHandle<DHTNodeLookupEntry> >::const_iterator i =