1 files changed, 4 insertions, 2 deletions
diff --git a/src/network/kernel/qnetworkproxy_libproxy.cpp b/src/network/kernel/qnetworkproxy_libproxy.cpp
index 248a8d2456..da1e8fdbd4 100644
--- a/src/network/kernel/qnetworkproxy_libproxy.cpp
+++ b/src/network/kernel/qnetworkproxy_libproxy.cpp
@@ -166,13 +166,15 @@ QList<QNetworkProxy> QNetworkProxyFactory::systemProxyForQuery(const QNetworkPro
         break;
     // fake URLs to get libproxy to tell us the SOCKS proxy
     case QNetworkProxyQuery::TcpSocket:
-        queryUrl.setScheme(QStringLiteral("tcp"));
+        if (queryUrl.scheme().isEmpty())
+            queryUrl.setScheme(QStringLiteral("tcp"));
         queryUrl.setHost(query.peerHostName());
         queryUrl.setPort(query.peerPort());
         requiredCapabilities |= QNetworkProxy::TunnelingCapability;
         break;
     case QNetworkProxyQuery::UdpSocket:
-        queryUrl.setScheme(QStringLiteral("udp"));
+        if (queryUrl.scheme().isEmpty())
+            queryUrl.setScheme(QStringLiteral("udp"));
         queryUrl.setHost(query.peerHostName());
         queryUrl.setPort(query.peerPort());
         requiredCapabilities |= QNetworkProxy::UdpTunnelingCapability;