diff --git a/ChangeLog b/ChangeLog
index 1ed0724e..60d55668 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-04-26  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
+
+	Added comment
+	* src/RequestGroup.cc (createNextCommand)
+
 2008-04-26  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
 
 	Capitalized METHOD_GET and METHOD_HEAD
diff --git a/src/RequestGroup.cc b/src/RequestGroup.cc
index 18ed9c23..bc695c9d 100644
--- a/src/RequestGroup.cc
+++ b/src/RequestGroup.cc
@@ -466,6 +466,10 @@ Commands RequestGroup::createNextCommand(DownloadEngine* e, unsigned int numComm
 	}
 
 	if(req->getProtocol() == "http" || req->getProtocol() == "https") {
+	  // we set supportsPersistentConnection true here. When HTTP response
+	  // is returned and it turns out that the remote server doesn't
+	  // support persistent connection, then this value will be set to
+	  // false.
 	  req->supportsPersistentConnection(true);
 	}