diff --git a/plugins/welcomepage/welcomepageplugin.cpp b/plugins/welcomepage/welcomepageplugin.cpp
index 9a8b76c70..0e987938d 100644
--- a/plugins/welcomepage/welcomepageplugin.cpp
+++ b/plugins/welcomepage/welcomepageplugin.cpp
@@ -1,61 +1,62 @@
 /* This file is part of KDevelop
   Copyright 2010 Aleix Pol Gonzalez <aleixpol@kde.org>
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
 
   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
 */
 
 #include "welcomepageplugin.h"
 #include "welcomepageview.h"
 
 #include <KPluginFactory>
 
 #include <interfaces/icore.h>
 #include <interfaces/iuicontroller.h>
 #include <sublime/mainwindow.h>
 
 #include <QDebug>
 
 #include <stdint.h>
 
 K_PLUGIN_FACTORY_WITH_JSON(KDevWelcomePagePluginFactory, "kdevwelcomepage.json", registerPlugin<KDevWelcomePagePlugin>();)
 
 using namespace KDevelop;
 
 namespace {
 WelcomePageWidget* createWelcomePageWidget(QWidget* parent)
 {
     // don't attempt to load any QML if CPU doesn't have SSE2 support (cf. bug 381999)
-#if defined(Q_OS_LINUX) && INTPTR_MAX == INT32_MAX && (defined(Q_CC_GNU) || (defined(Q_CC_CLANG) && __clang_major__ >= 3 && __clang_minor__ >= 7))
+    // Note: Clang 4.0 moved the definition of __cpu_model (used by __builtin_cpu_supporst) into compiler-rt lib it seems -- let's just disable this feature on this compiler
+#if defined(Q_OS_LINUX) && INTPTR_MAX == INT32_MAX && (defined(Q_CC_GNU) || (defined(Q_CC_CLANG) && __clang_major__ >= 3 && __clang_minor__ >= 7 && __clang_major__ < 4))
     if (!__builtin_cpu_supports("sse2")) {
         qWarning() << "Welcome Page won't load any QML -- lacking SSE2 support on this processor";
         return nullptr;
     }
 #endif
 
     return new WelcomePageWidget({}, parent);
 }
 }
 
 KDevWelcomePagePlugin::KDevWelcomePagePlugin( QObject* parent, const QVariantList& )
     : IPlugin(QStringLiteral("kdevwelcomepage"), parent )
 {
     auto mainWindow = qobject_cast<Sublime::MainWindow*>(ICore::self()->uiController()->activeMainWindow());
     if (auto welcomePageWidget = createWelcomePageWidget(mainWindow)) {
         mainWindow->setBackgroundCentralWidget(welcomePageWidget);
     }
 }
 
 #include "welcomepageplugin.moc"