diff --git a/src/core/web_contents_adapter.cpp b/src/core/web_contents_adapter.cpp
index d2eb076d6291deb6abcebe6bda7f7d8ef4784fbd..a4a8bbe2344413d3f16ffe28fd5308f9828a562b 100644
--- a/src/core/web_contents_adapter.cpp
+++ b/src/core/web_contents_adapter.cpp
@@ -357,6 +357,9 @@ void WebContentsAdapter::initialize(WebContentsAdapterClient *adapterClient)
     if (!d->webContents)
         d->webContents.reset(createBlankWebContents(adapterClient));
 
+    // This might replace any adapter that has been initialized with this WebEngineSettings.
+    adapterClient->webEngineSettings()->setWebContentsAdapter(this);
+
     content::RendererPreferences* rendererPrefs = d->webContents->GetMutableRendererPrefs();
     rendererPrefs->use_custom_colors = true;
     // Qt returns a flash time (the whole cycle) in ms, chromium expects just the interval in seconds
diff --git a/src/core/web_engine_settings.cpp b/src/core/web_engine_settings.cpp
index 4d0e727e38c6b5b2d72b25f57ad79243e071c7db..507866e565708fec3d3645cb9042d527467a92ff 100644
--- a/src/core/web_engine_settings.cpp
+++ b/src/core/web_engine_settings.cpp
@@ -82,14 +82,6 @@ WebEngineSettings::WebEngineSettings(WebEngineSettingsDelegate *delegate)
     Q_ASSERT(delegate);
 }
 
-WebEngineSettings::WebEngineSettings(WebEngineSettingsDelegate *delegate, WebContentsAdapter *adapter)
-    : m_adapter(adapter)
-    , m_delegate(delegate)
-    , m_batchTimer(new BatchTimer(this))
-{
-    Q_ASSERT(delegate);
-}
-
 WebEngineSettings::~WebEngineSettings()
 {
 }
@@ -252,8 +244,8 @@ void WebEngineSettings::doApply()
     // FIXME: batch sequential calls to apply?
     applySettingsToWebPreferences(webPreferences.data());
 
-    if (m_adapter)
-        m_adapter->updateWebPreferences(*webPreferences.data());
+    Q_ASSERT(m_adapter);
+    m_adapter->updateWebPreferences(*webPreferences.data());
 }
 
 void WebEngineSettings::applySettingsToWebPreferences(WebPreferences *prefs)
diff --git a/src/core/web_engine_settings.h b/src/core/web_engine_settings.h
index 5e19c242d8c2499c234c892d6cb6963350ee5b6e..a1c41c187dac6639c403ff71b2af5fac8484fd7b 100644
--- a/src/core/web_engine_settings.h
+++ b/src/core/web_engine_settings.h
@@ -99,7 +99,6 @@ public:
     };
 
     WebEngineSettings(WebEngineSettingsDelegate*);
-    WebEngineSettings(WebEngineSettingsDelegate *,WebContentsAdapter *);
     virtual ~WebEngineSettings();
 
     void overrideWebPreferences(WebPreferences *prefs);
@@ -125,6 +124,7 @@ public:
 private:
     void doApply();
     void applySettingsToWebPreferences(WebPreferences *);
+    void setWebContentsAdapter(WebContentsAdapter *adapter) { m_adapter = adapter; }
 
     WebContentsAdapter* m_adapter;
     WebEngineSettingsDelegate* m_delegate;
@@ -136,6 +136,7 @@ private:
     QScopedPointer<BatchTimer> m_batchTimer;
 
     friend class BatchTimer;
+    friend class WebContentsAdapter;
 };
 
 #endif // WEB_ENGINE_SETTINGS_H
diff --git a/src/webenginewidgets/api/qwebenginepage.cpp b/src/webenginewidgets/api/qwebenginepage.cpp
index 71099e547ea391210c1435afa92bbd8b05a826aa..4cf35f8c401a3d21b5a6de6fa47122de1a9355e7 100644
--- a/src/webenginewidgets/api/qwebenginepage.cpp
+++ b/src/webenginewidgets/api/qwebenginepage.cpp
@@ -168,7 +168,7 @@ void CallbackDirectory::CallbackSharedDataPointer::doDeref()
 QWebEnginePagePrivate::QWebEnginePagePrivate()
     : adapter(new WebContentsAdapter)
     , history(new QWebEngineHistory(new QWebEngineHistoryPrivate(this)))
-    , settings(new QWebEngineSettings(new QWebEngineSettingsPrivate(adapter.data())))
+    , settings(new QWebEngineSettings)
     , view(0)
 {
     memset(actions, 0, sizeof(actions));
diff --git a/src/webenginewidgets/api/qwebenginesettings.cpp b/src/webenginewidgets/api/qwebenginesettings.cpp
index 52cc59a80d27e68f0002671e1920c7bd9fa63338..b2a57952f6178422df7d46f311402a66624e9e0b 100644
--- a/src/webenginewidgets/api/qwebenginesettings.cpp
+++ b/src/webenginewidgets/api/qwebenginesettings.cpp
@@ -84,15 +84,11 @@ QWebEngineSettingsPrivate::QWebEngineSettingsPrivate()
 {
 }
 
-QWebEngineSettingsPrivate::QWebEngineSettingsPrivate(WebContentsAdapter *adapter)
-    : coreSettings(new WebEngineSettings(this, adapter))
-{
-}
-
 void QWebEngineSettingsPrivate::apply()
 {
     coreSettings->scheduleApply();
     QWebEngineSettingsPrivate *globals = QWebEngineSettings::globalSettings()->d;
+    Q_ASSERT((this == globals) != (allSettings->contains(this)));
     if (this == globals) {
         Q_FOREACH (QWebEngineSettingsPrivate *settings, *allSettings)
             settings->coreSettings->scheduleApply();
@@ -111,8 +107,12 @@ WebEngineSettings *QWebEngineSettingsPrivate::fallbackSettings() const {
 QWebEngineSettings *QWebEngineSettings::globalSettings()
 {
     static QWebEngineSettings* globalSettings = 0;
-    if (!globalSettings)
+    if (!globalSettings) {
         globalSettings = new QWebEngineSettings;
+        // globalSettings shouldn't be in that list.
+        allSettings->removeAll(globalSettings->d);
+        globalSettings->d->initDefaults();
+    }
     return globalSettings;
 }
 
@@ -162,14 +162,6 @@ void QWebEngineSettings::resetFontSize(QWebEngineSettings::FontSize type)
 QWebEngineSettings::QWebEngineSettings()
     : d(new QWebEngineSettingsPrivate)
 {
-    d->initDefaults();
-}
-
-
-QWebEngineSettings::QWebEngineSettings(QWebEngineSettingsPrivate *p)
-    : d(p)
-{
-    Q_ASSERT(d);
     allSettings->append(d);
     d->coreSettings->scheduleApply();
 }
diff --git a/src/webenginewidgets/api/qwebenginesettings.h b/src/webenginewidgets/api/qwebenginesettings.h
index bbb0cf899458c668af9a902a079e2e5e86967c8c..c8af3a1b10cb00bed21c572be5738581d2e2df35 100644
--- a/src/webenginewidgets/api/qwebenginesettings.h
+++ b/src/webenginewidgets/api/qwebenginesettings.h
@@ -87,7 +87,6 @@ private:
     friend class QWebEngineSettingsPrivate;
 
     QWebEngineSettings();
-    QWebEngineSettings(QWebEngineSettingsPrivate *);
     ~QWebEngineSettings();
 
     QWebEngineSettingsPrivate *d;
diff --git a/src/webenginewidgets/api/qwebenginesettings_p.h b/src/webenginewidgets/api/qwebenginesettings_p.h
index 96fa9e27ba918a63e85efa9fec33407e913a8262..dda39a37d6f96a8c7cdd461d2048921bf14bdf61 100644
--- a/src/webenginewidgets/api/qwebenginesettings_p.h
+++ b/src/webenginewidgets/api/qwebenginesettings_p.h
@@ -52,7 +52,6 @@ class QWebEngineSettingsPrivate : public WebEngineSettingsDelegate {
 
 public:
     QWebEngineSettingsPrivate();
-    QWebEngineSettingsPrivate(WebContentsAdapter *adapter);
 
     void initDefaults();
     void apply() Q_DECL_OVERRIDE;