diff --git a/ChangeLog b/ChangeLog
index 73f5483f..a59c3947 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-09-08  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Use const ref
+	* src/MultiUrlRequestInfo.cc
+
 2010-09-08  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Fixed the bug that aria2 reports error and exits with non-zero
diff --git a/src/MultiUrlRequestInfo.cc b/src/MultiUrlRequestInfo.cc
index 7baf11c1..5dbadaf7 100644
--- a/src/MultiUrlRequestInfo.cc
+++ b/src/MultiUrlRequestInfo.cc
@@ -195,7 +195,7 @@ downloadresultcode::RESULT MultiUrlRequestInfo::execute()
       e->getCookieStorage()->saveNsFormat(option_->get(PREF_SAVE_COOKIES));
     }
 
-    std::string serverStatOf = option_->get(PREF_SERVER_STAT_OF);
+    const std::string& serverStatOf = option_->get(PREF_SERVER_STAT_OF);
     if(!serverStatOf.empty()) {
       e->getRequestGroupMan()->saveServerStat(serverStatOf);
     }