diff --git a/tests/auto/network/kernel/qnetworkproxyfactory/tst_qnetworkproxyfactory.cpp b/tests/auto/network/kernel/qnetworkproxyfactory/tst_qnetworkproxyfactory.cpp
index 90e6797117..d57a99a758 100644
--- a/tests/auto/network/kernel/qnetworkproxyfactory/tst_qnetworkproxyfactory.cpp
+++ b/tests/auto/network/kernel/qnetworkproxyfactory/tst_qnetworkproxyfactory.cpp
@@ -105,7 +105,7 @@ QString tst_QNetworkProxyFactory::formatProxyName(const QNetworkProxy & proxy) c
 {
     QString proxyName;
     if (!proxy.user().isNull())
-        proxyName.append("%1:%2@").arg(proxy.user(), proxy.password());
+        proxyName.append(QString("%1:%2@").arg(proxy.user(), proxy.password()));
     proxyName.append(QString("%1:%2").arg(proxy.hostName()).arg(proxy.port()));
     proxyName.append(QString(" (type=%1, capabilities=%2)").arg(proxy.type()).arg(proxy.capabilities()));