diff --git a/src/GUI/UpdateChecker.cxx b/src/GUI/UpdateChecker.cxx
index ccfde7a..0610890 100644
--- a/src/GUI/UpdateChecker.cxx
+++ b/src/GUI/UpdateChecker.cxx
@@ -83,6 +83,10 @@ UpdateChecker::UpdateChecker(QObject *parent) : QObject(parent)
 {
     QSettings settings;
     QDate nextCheck = settings.value("next-update-check").toDate();
+
+    //zhongjin
+    SG_LOG(SG_IO, SG_WARN, "UpdateChecker()");
+
     if (!nextCheck.isValid()) {
         // check tomorrow, so we don't nag immediately after insstallaion
         const QDate n = QDate::currentDate().addDays(1);