diff --git a/src/mirall/application.cpp b/src/mirall/application.cpp
index 45cc1073c6..6b0f5ecf97 100644
--- a/src/mirall/application.cpp
+++ b/src/mirall/application.cpp
@@ -517,6 +517,7 @@ void Application::slotSetupProxy()
 
     switch(proxyType) {
     case QNetworkProxy::NoProxy:
+        QNetworkProxyFactory::setUseSystemConfiguration(false);
         QNetworkProxy::setApplicationProxy(QNetworkProxy::NoProxy);
         break;
     case QNetworkProxy::DefaultProxy:
@@ -524,10 +525,12 @@ void Application::slotSetupProxy()
         break;
     case QNetworkProxy::Socks5Proxy:
         proxy.setType(QNetworkProxy::Socks5Proxy);
+        QNetworkProxyFactory::setUseSystemConfiguration(false);
         QNetworkProxy::setApplicationProxy(proxy);
         break;
     case QNetworkProxy::HttpProxy:
         proxy.setType(QNetworkProxy::HttpProxy);
+        QNetworkProxyFactory::setUseSystemConfiguration(false);
         QNetworkProxy::setApplicationProxy(proxy);
         break;
     default: