diff -urN qtbase-opensource-src-5.2.0~beta1-old/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp qtbase-opensource-src-5.2.0~beta1/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp
--- qtbase-opensource-src-5.2.0~beta1-old/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp	2013-10-22 10:49:22.000000000 +0200
+++ qtbase-opensource-src-5.2.0~beta1/src/platformsupport/themes/genericunix/qgenericunixthemes.cpp	2013-11-19 19:13:11.366024931 +0100
@@ -555,6 +555,9 @@
 {
     QStringList result;
     if (QGuiApplication::desktopSettingsAware()) {
+        const QString session = QString::fromLocal8Bit(qgetenv("DESKTOP_SESSION"));
+        if (!session.isEmpty() && session != QStringLiteral("default"))
+            result.push_back(session);
         const QByteArray desktopEnvironment = QGuiApplicationPrivate::platformIntegration()->services()->desktopEnvironment();
         if (desktopEnvironment == QByteArrayLiteral("KDE")) {
 #ifndef QT_NO_SETTINGS
@@ -570,9 +573,6 @@
             // fallback to the generic Gnome theme if loading the GTK2 theme fails
             result.push_back(QLatin1String(QGnomeTheme::name));
         }
-        const QString session = QString::fromLocal8Bit(qgetenv("DESKTOP_SESSION"));
-        if (!session.isEmpty() && session != QStringLiteral("default") && !result.contains(session))
-            result.push_back(session);
     } // desktopSettingsAware
     if (result.isEmpty())
         result.push_back(QLatin1String(QGenericUnixTheme::name));