diff --git a/src/lib/3rdparty/squeezelabelv1.cpp b/src/lib/3rdparty/squeezelabelv1.cpp
index 53b82c996..67626afc0 100644
--- a/src/lib/3rdparty/squeezelabelv1.cpp
+++ b/src/lib/3rdparty/squeezelabelv1.cpp
@@ -38,7 +38,7 @@ void SqueezeLabelV1::paintEvent(QPaintEvent* event)
     if (m_SqueezedTextCache != text()) {
         m_SqueezedTextCache = text();
         QFontMetrics fm = fontMetrics();
-        if (fm.width(m_SqueezedTextCache) > contentsRect().width()) {
+        if (fm.horizontalAdvance(m_SqueezedTextCache) > contentsRect().width()) {
             QString elided = fm.elidedText(text(), Qt::ElideMiddle, width());
             setText(elided);
         }
diff --git a/src/lib/3rdparty/stylehelper.cpp b/src/lib/3rdparty/stylehelper.cpp
index 09a4cd40d..ca0372aa7 100644
--- a/src/lib/3rdparty/stylehelper.cpp
+++ b/src/lib/3rdparty/stylehelper.cpp
@@ -155,9 +155,9 @@ void StyleHelper::verticalGradient(QPainter* painter, const QRect &spanRect, con
     if (StyleHelper::usePixmapCache()) {
         QString key;
         QColor keyColor = baseColor(lightColored);
-        key.sprintf("mh_vertical %d %d %d %d %d",
-                    spanRect.width(), spanRect.height(), clipRect.width(),
-                    clipRect.height(), keyColor.rgb());
+        key.asprintf("mh_vertical %d %d %d %d %d",
+                     spanRect.width(), spanRect.height(), clipRect.width(),
+                     clipRect.height(), keyColor.rgb());
 
         QPixmap pixmap;
         if (!QPixmapCache::find(key, pixmap)) {
diff --git a/src/lib/adblock/adblocksubscription.cpp b/src/lib/adblock/adblocksubscription.cpp
index 89c72b1ed..c8cf58686 100644
--- a/src/lib/adblock/adblocksubscription.cpp
+++ b/src/lib/adblock/adblocksubscription.cpp
@@ -309,10 +309,10 @@ void AdBlockCustomList::loadSubscription(const QStringList &disabledRules)
         stream.setCodec("UTF-8");
 
         if (!rules.contains(ddg1 + QL1S("\n")))
-            stream << ddg1 << endl;
+            stream << ddg1 << Qt::endl;
 
         if (!rules.contains(QL1S("\n") + ddg2))
-            stream << ddg2 << endl;
+            stream << ddg2 << Qt::endl;
     }
     file.close();
 
@@ -330,12 +330,12 @@ void AdBlockCustomList::saveSubscription()
 
     QTextStream textStream(&file);
     textStream.setCodec("UTF-8");
-    textStream << "Title: " << title() << endl;
-    textStream << "Url: " << url().toString() << endl;
-    textStream << "[Adblock Plus 1.1.1]" << endl;
+    textStream << "Title: " << title() << Qt::endl;
+    textStream << "Url: " << url().toString() << Qt::endl;
+    textStream << "[Adblock Plus 1.1.1]" << Qt::endl;
 
     for (const AdBlockRule* rule : qAsConst(m_rules)) {
-        textStream << rule->filter() << endl;
+        textStream << rule->filter() << Qt::endl;
     }
 
     file.close();
diff --git a/src/lib/bookmarks/bookmarkitem.cpp b/src/lib/bookmarks/bookmarkitem.cpp
index 47abd0b72..0d53382b1 100644
--- a/src/lib/bookmarks/bookmarkitem.cpp
+++ b/src/lib/bookmarks/bookmarkitem.cpp
@@ -77,7 +77,7 @@ QIcon BookmarkItem::icon()
 
     switch (m_type) {
     case Url:
-        if (m_iconTime.isNull() || m_iconTime.elapsed() > iconCacheTime) {
+        if ((!m_iconTime.isValid()) || (m_iconTime.elapsed() > iconCacheTime)) {
             m_icon = IconProvider::iconForUrl(m_url);
             m_iconTime.restart();
         }
diff --git a/src/lib/bookmarks/bookmarkitem.h b/src/lib/bookmarks/bookmarkitem.h
index cabe85587..eaea42447 100644
--- a/src/lib/bookmarks/bookmarkitem.h
+++ b/src/lib/bookmarks/bookmarkitem.h
@@ -21,7 +21,7 @@
 #include <QString>
 #include <QList>
 #include <QIcon>
-#include <QTime>
+#include <QElapsedTimer>
 #include <QUrl>
 
 #include "qzcommon.h"
@@ -97,7 +97,7 @@ private:
     QString m_description;
     QString m_keyword;
     QIcon m_icon;
-    QTime m_iconTime;
+    QElapsedTimer m_iconTime;
     int m_visitCount;
     bool m_expanded;
     bool m_sidebarExpanded;
diff --git a/src/lib/bookmarks/bookmarksexport/htmlexporter.cpp b/src/lib/bookmarks/bookmarksexport/htmlexporter.cpp
index 92866d621..edd82caa8 100644
--- a/src/lib/bookmarks/bookmarksexport/htmlexporter.cpp
+++ b/src/lib/bookmarks/bookmarksexport/htmlexporter.cpp
@@ -51,13 +51,13 @@ bool HtmlExporter::exportBookmarks(BookmarkItem* root)
     QTextStream stream(&file);
     stream.setCodec("UTF-8");
 
-    stream << "<!DOCTYPE NETSCAPE-Bookmark-file-1>" << endl;
-    stream << "<!-- This is an automatically generated file." << endl;
-    stream << "     It will be read and overwritten." << endl;
-    stream << "     DO NOT EDIT! -->" << endl;
-    stream << R"(<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">)" << endl;
-    stream << "<TITLE>Bookmarks</TITLE>" << endl;
-    stream << "<H1>Bookmarks</H1>" << endl;
+    stream << "<!DOCTYPE NETSCAPE-Bookmark-file-1>" << Qt::endl;
+    stream << "<!-- This is an automatically generated file." << Qt::endl;
+    stream << "     It will be read and overwritten." << Qt::endl;
+    stream << "     DO NOT EDIT! -->" << Qt::endl;
+    stream << R"(<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">)" << Qt::endl;
+    stream << "<TITLE>Bookmarks</TITLE>" << Qt::endl;
+    stream << "<H1>Bookmarks</H1>" << Qt::endl;
 
     writeBookmark(root, stream, 0);
     return true;
@@ -72,35 +72,35 @@ void HtmlExporter::writeBookmark(BookmarkItem* item, QTextStream &stream, int le
 
     switch (item->type()) {
     case BookmarkItem::Url:
-        stream << indent << "<DT><A HREF=\"" << item->urlString() << "\">" << item->title() << "</A>" << endl;
+        stream << indent << "<DT><A HREF=\"" << item->urlString() << "\">" << item->title() << "</A>" << Qt::endl;
         break;
 
     case BookmarkItem::Separator:
-        stream << indent << "<HR>" << endl;
+        stream << indent << "<HR>" << Qt::endl;
         break;
 
     case BookmarkItem::Folder: {
-        stream << indent << "<DT><H3>" << item->title() << "</H3>" << endl;
-        stream << indent << "<DL><p>" << endl;
+        stream << indent << "<DT><H3>" << item->title() << "</H3>" << Qt::endl;
+        stream << indent << "<DL><p>" << Qt::endl;
 
         const auto children = item->children();
         for (BookmarkItem* child : children) {
             writeBookmark(child, stream, level + 1);
         }
 
-        stream << indent << "</DL><p>" << endl;
+        stream << indent << "</DL><p>" << Qt::endl;
         break;
     }
 
     case BookmarkItem::Root: {
-        stream << indent << "<DL><p>" << endl;
+        stream << indent << "<DL><p>" << Qt::endl;
 
         const auto children = item->children();
         for (BookmarkItem* child : children) {
             writeBookmark(child, stream, level + 1);
         }
 
-        stream << indent << "</DL><p>" << endl;
+        stream << indent << "</DL><p>" << Qt::endl;
         break;
     }
 
diff --git a/src/lib/downloads/downloaditem.h b/src/lib/downloads/downloaditem.h
index f025330d3..5b53b0c15 100644
--- a/src/lib/downloads/downloaditem.h
+++ b/src/lib/downloads/downloaditem.h
@@ -23,6 +23,7 @@
 #include <QBasicTimer>
 #include <QUrl>
 #include <QNetworkReply>
+#include <QElapsedTimer>
 #include <QTime>
 
 #include "qzcommon.h"
@@ -52,7 +53,7 @@ public:
     QString path() const;
     QString fileName() const;
     ~DownloadItem() override;
-    void setDownTimer(const QTime &timer) { m_downTimer = timer; }
+    void setDownTimer(const QElapsedTimer &timer) { m_downTimer = timer; }
 
     void startDownloading();
 
@@ -87,7 +88,7 @@ private:
     QWebEngineDownloadItem* m_download;
     QString m_path;
     QString m_fileName;
-    QTime m_downTimer;
+    QElapsedTimer m_downTimer;
     QTime m_remTime;
     QUrl m_downUrl;
     bool m_openFile;
diff --git a/src/lib/downloads/downloadmanager.cpp b/src/lib/downloads/downloadmanager.cpp
index bd35f3221..2d57a53cb 100644
--- a/src/lib/downloads/downloadmanager.cpp
+++ b/src/lib/downloads/downloadmanager.cpp
@@ -260,7 +260,7 @@ void DownloadManager::clearList()
 
 void DownloadManager::download(QWebEngineDownloadItem *downloadItem)
 {
-    QTime downloadTimer;
+    QElapsedTimer downloadTimer;
     downloadTimer.start();
 
     closeDownloadTab(downloadItem);
diff --git a/src/lib/history/historymodel.cpp b/src/lib/history/historymodel.cpp
index 1aabedfe9..caff6b71a 100644
--- a/src/lib/history/historymodel.cpp
+++ b/src/lib/history/historymodel.cpp
@@ -22,6 +22,7 @@
 
 #include <QApplication>
 #include <QDateTime>
+#include <QTimeZone>
 #include <QTimer>
 
 static QString dateTimeToString(const QDateTime &dateTime)
@@ -336,7 +337,7 @@ void HistoryModel::historyEntryAdded(const HistoryEntry &entry)
 
         m_todayItem = new HistoryItem(0);
         m_todayItem->setStartTimestamp(-1);
-        m_todayItem->setEndTimestamp(QDateTime(QDate::currentDate()).toMSecsSinceEpoch());
+        m_todayItem->setEndTimestamp(QDateTime(QDate::currentDate(), QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch());
         m_todayItem->title = tr("Today");
 
         m_rootItem->prependChild(m_todayItem);
@@ -466,17 +467,17 @@ void HistoryModel::init()
         QString itemName;
 
         if (timestampDate == today) {
-            endTimestamp = QDateTime(today).toMSecsSinceEpoch();
+            endTimestamp = QDateTime(today, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
 
             itemName = tr("Today");
         }
         else if (timestampDate >= week) {
-            endTimestamp = QDateTime(week).toMSecsSinceEpoch();
+            endTimestamp = QDateTime(week, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
 
             itemName = tr("This Week");
         }
         else if (timestampDate.month() == month.month() && timestampDate.year() == month.year()) {
-            endTimestamp = QDateTime(month).toMSecsSinceEpoch();
+            endTimestamp = QDateTime(month, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
 
             itemName = tr("This Month");
         }
@@ -484,8 +485,8 @@ void HistoryModel::init()
             QDate startDate(timestampDate.year(), timestampDate.month(), timestampDate.daysInMonth());
             QDate endDate(startDate.year(), startDate.month(), 1);
 
-            timestamp = QDateTime(startDate, QTime(23, 59, 59)).toMSecsSinceEpoch();
-            endTimestamp = QDateTime(endDate).toMSecsSinceEpoch();
+            timestamp = QDateTime(startDate, QTime(23, 59, 59), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
+            endTimestamp = QDateTime(endDate, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
             itemName = QString("%1 %2").arg(History::titleCaseLocalizedMonth(timestampDate.month()), QString::number(timestampDate.year()));
         }
 
diff --git a/src/lib/other/clearprivatedata.cpp b/src/lib/other/clearprivatedata.cpp
index 07878f8f8..69608adc9 100644
--- a/src/lib/other/clearprivatedata.cpp
+++ b/src/lib/other/clearprivatedata.cpp
@@ -35,6 +35,7 @@
 #include <QWebEngineSettings>
 #include <QNetworkDiskCache>
 #include <QDateTime>
+#include <QTimeZone>
 #include <QCloseEvent>
 #include <QFileInfo>
 #include <QWebEngineProfile>
@@ -111,13 +112,13 @@ void ClearPrivateData::dialogAccepted()
 
         switch (ui->historyLength->currentIndex()) {
         case 0: //Later Today
-            end = QDateTime(today).toMSecsSinceEpoch();
+            end = QDateTime(today, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
             break;
         case 1: //Week
-            end = QDateTime(week).toMSecsSinceEpoch();
+            end = QDateTime(week, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
             break;
         case 2: //Month
-            end = QDateTime(month).toMSecsSinceEpoch();
+            end = QDateTime(month, QTime(), QTimeZone::systemTimeZone()).toMSecsSinceEpoch();
             break;
         case 3: //All
             break;
diff --git a/src/lib/plugins/qml/api/events/qmlwheelevent.cpp b/src/lib/plugins/qml/api/events/qmlwheelevent.cpp
index 0390bf384..ec3389759 100644
--- a/src/lib/plugins/qml/api/events/qmlwheelevent.cpp
+++ b/src/lib/plugins/qml/api/events/qmlwheelevent.cpp
@@ -45,7 +45,7 @@ QPoint QmlWheelEvent::globalPos() const
     if (!m_wheelEvent) {
         return QPoint(-1, -1);
     }
-    return m_wheelEvent->globalPos();
+    return m_wheelEvent->globalPosition().toPoint();
 }
 
 QPointF QmlWheelEvent::globalPosF() const
@@ -53,7 +53,7 @@ QPointF QmlWheelEvent::globalPosF() const
     if (!m_wheelEvent) {
         return QPointF(-1, -1);
     }
-    return m_wheelEvent->globalPosF();
+    return m_wheelEvent->globalPosition();
 }
 
 int QmlWheelEvent::globalX() const
@@ -61,7 +61,7 @@ int QmlWheelEvent::globalX() const
     if (!m_wheelEvent) {
         return -1;
     }
-    return m_wheelEvent->globalX();
+    return m_wheelEvent->globalPosition().toPoint().x();
 }
 
 int QmlWheelEvent::globalY() const
@@ -69,7 +69,7 @@ int QmlWheelEvent::globalY() const
     if (!m_wheelEvent) {
         return -1;
     }
-    return m_wheelEvent->globalY();
+    return m_wheelEvent->globalPosition().toPoint().x();
 }
 
 bool QmlWheelEvent::inverted() const
@@ -101,7 +101,7 @@ QPoint QmlWheelEvent::pos() const
     if (!m_wheelEvent) {
         return QPoint(-1, -1);
     }
-    return m_wheelEvent->pos();
+    return m_wheelEvent->position().toPoint();
 }
 
 QPointF QmlWheelEvent::posF() const
@@ -109,7 +109,7 @@ QPointF QmlWheelEvent::posF() const
     if (!m_wheelEvent) {
         return QPointF(-1, -1);
     }
-    return m_wheelEvent->posF();
+    return m_wheelEvent->position();
 }
 
 int QmlWheelEvent::source() const
@@ -125,7 +125,7 @@ int QmlWheelEvent::x() const
     if (!m_wheelEvent) {
         return -1;
     }
-    return m_wheelEvent->x();
+    return m_wheelEvent->position().toPoint().x();
 }
 
 int QmlWheelEvent::y() const
@@ -133,7 +133,7 @@ int QmlWheelEvent::y() const
     if (!m_wheelEvent) {
         return -1;
     }
-    return m_wheelEvent->y();
+    return m_wheelEvent->position().toPoint().y();
 }
 
 void QmlWheelEvent::clear()
diff --git a/src/lib/plugins/qml/qmlplugininterface.cpp b/src/lib/plugins/qml/qmlplugininterface.cpp
index 5560b0074..f12d6a46e 100644
--- a/src/lib/plugins/qml/qmlplugininterface.cpp
+++ b/src/lib/plugins/qml/qmlplugininterface.cpp
@@ -386,5 +386,5 @@ void QmlPluginInterface::setAcceptNavigationRequest(const QJSValue &acceptNaviga
 
 QQmlListProperty<QObject> QmlPluginInterface::childItems()
 {
-    return QQmlListProperty<QObject>(this, m_childItems);
+    return QQmlListProperty<QObject>(this, &m_childItems);
 }
diff --git a/src/lib/webengine/webpage.cpp b/src/lib/webengine/webpage.cpp
index 57b5be114..15f91e53b 100644
--- a/src/lib/webengine/webpage.cpp
+++ b/src/lib/webengine/webpage.cpp
@@ -64,7 +64,7 @@
 
 QString WebPage::s_lastUploadLocation = QDir::homePath();
 QUrl WebPage::s_lastUnsupportedUrl;
-QTime WebPage::s_lastUnsupportedUrlTime;
+QElapsedTimer WebPage::s_lastUnsupportedUrlTime;
 QStringList s_supportedSchemes;
 
 static const bool kEnableJsOutput = qEnvironmentVariableIsSet("FALKON_ENABLE_JS_OUTPUT");
@@ -365,7 +365,7 @@ void WebPage::desktopServicesOpen(const QUrl &url)
     // Open same url only once in 2 secs
     const int sameUrlTimeout = 2 * 1000;
 
-    if (s_lastUnsupportedUrl != url || s_lastUnsupportedUrlTime.isNull() || s_lastUnsupportedUrlTime.elapsed() > sameUrlTimeout) {
+    if ((s_lastUnsupportedUrl != url) || (!s_lastUnsupportedUrlTime.isValid()) || (s_lastUnsupportedUrlTime.elapsed() > sameUrlTimeout)) {
         s_lastUnsupportedUrl = url;
         s_lastUnsupportedUrlTime.restart();
         QDesktopServices::openUrl(url);
diff --git a/src/lib/webengine/webpage.h b/src/lib/webengine/webpage.h
index 364de2809..a61e8c41d 100644
--- a/src/lib/webengine/webpage.h
+++ b/src/lib/webengine/webpage.h
@@ -22,6 +22,7 @@
 #include <QWebEngineScript>
 #include <QWebEngineFullScreenRequest>
 #include <QVector>
+#include <QElapsedTimer>
 
 #include "qzcommon.h"
 
@@ -104,7 +105,7 @@ private:
 
     static QString s_lastUploadLocation;
     static QUrl s_lastUnsupportedUrl;
-    static QTime s_lastUnsupportedUrlTime;
+    static QElapsedTimer s_lastUnsupportedUrlTime;
 
     DelayedFileWatcher* m_fileWatcher;
     QEventLoop* m_runningLoop;
diff --git a/src/lib/webengine/webview.cpp b/src/lib/webengine/webview.cpp
index fced18d54..0d68da7bb 100644
--- a/src/lib/webengine/webview.cpp
+++ b/src/lib/webengine/webview.cpp
@@ -1055,9 +1055,9 @@ void WebView::_wheelEvent(QWheelEvent *event)
     if (event->spontaneous()) {
         const qreal multiplier = QApplication::wheelScrollLines() / 3.0;
         if (multiplier != 1.0) {
-            QWheelEvent e(event->pos(), event->globalPos(), event->pixelDelta(),
-                          event->angleDelta() * multiplier, 0, Qt::Horizontal, event->buttons(),
-                          event->modifiers(), event->phase(), event->source(), event->inverted());
+            QWheelEvent e(event->position(), event->globalPosition(), event->pixelDelta(),
+                          event->angleDelta() * multiplier, event->buttons(),
+                          event->modifiers(), event->phase(), event->inverted(), event->source());
             QApplication::sendEvent(m_rwhvqt, &e);
             event->accept();
         }
diff --git a/src/plugins/KDEFrameworksIntegration/kwalletpasswordbackend.cpp b/src/plugins/KDEFrameworksIntegration/kwalletpasswordbackend.cpp
index 9633359a9..392156ec7 100644
--- a/src/plugins/KDEFrameworksIntegration/kwalletpasswordbackend.cpp
+++ b/src/plugins/KDEFrameworksIntegration/kwalletpasswordbackend.cpp
@@ -72,7 +72,7 @@ QVector<PasswordEntry> KWalletPasswordBackend::getEntries(const QUrl &url)
     }
 
     // Sort to prefer last updated entries
-    qSort(list.begin(), list.end());
+    std::sort(list.begin(), list.end());
 
     return list;
 }
diff --git a/src/plugins/TabManager/tabmanagerwidget.cpp b/src/plugins/TabManager/tabmanagerwidget.cpp
index 76b5b5b1e..18b10423e 100644
--- a/src/plugins/TabManager/tabmanagerwidget.cpp
+++ b/src/plugins/TabManager/tabmanagerwidget.cpp
@@ -452,7 +452,7 @@ void TabManagerWidget::processActions()
 
     m_refreshBlocked = true;
 
-    QHash<BrowserWindow*, WebTab*> selectedTabs;
+    QMultiHash<BrowserWindow*, WebTab*> selectedTabs;
 
     const QString &command = sender()->objectName();
 
@@ -477,7 +477,7 @@ void TabManagerWidget::processActions()
                 continue;
             }
 
-            selectedTabs.insertMulti(mainWindow, webTab);
+            selectedTabs.insert(mainWindow, webTab);
         }
         winItem->setCheckState(0, Qt::Unchecked);
     }
@@ -518,7 +518,7 @@ void TabManagerWidget::changeGroupType()
     }
 }
 
-void TabManagerWidget::closeSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash)
+void TabManagerWidget::closeSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash)
 {
     if (tabsHash.isEmpty()) {
         return;
@@ -534,7 +534,7 @@ void TabManagerWidget::closeSelectedTabs(const QHash<BrowserWindow*, WebTab*> &t
     }
 }
 
-static void detachTabsTo(BrowserWindow* targetWindow, const QHash<BrowserWindow*, WebTab*> &tabsHash)
+static void detachTabsTo(BrowserWindow* targetWindow, const QMultiHash<BrowserWindow*, WebTab*> &tabsHash)
 {
     const QList<BrowserWindow*> &windows = tabsHash.uniqueKeys();
     for (BrowserWindow* mainWindow : windows) {
@@ -552,7 +552,7 @@ static void detachTabsTo(BrowserWindow* targetWindow, const QHash<BrowserWindow*
     }
 }
 
-void TabManagerWidget::detachSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash)
+void TabManagerWidget::detachSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash)
 {
     if (tabsHash.isEmpty() ||
             (tabsHash.uniqueKeys().size() == 1 &&
@@ -566,7 +566,7 @@ void TabManagerWidget::detachSelectedTabs(const QHash<BrowserWindow*, WebTab*> &
     detachTabsTo(newWindow, tabsHash);
 }
 
-bool TabManagerWidget::bookmarkSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash)
+bool TabManagerWidget::bookmarkSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash)
 {
     auto* dialog = new QDialog(getWindow(), Qt::WindowStaysOnTopHint | Qt::MSWindowsFixedSizeDialogHint);
     auto* layout = new QBoxLayout(QBoxLayout::TopToBottom, dialog);
@@ -608,7 +608,7 @@ bool TabManagerWidget::bookmarkSelectedTabs(const QHash<BrowserWindow*, WebTab*>
     return true;
 }
 
-void TabManagerWidget::unloadSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash)
+void TabManagerWidget::unloadSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash)
 {
     if (tabsHash.isEmpty()) {
         return;
@@ -951,7 +951,7 @@ bool TabTreeWidget::dropMimeData(QTreeWidgetItem *parent, int index, const QMime
             }
         }
         else if (!webTab->isPinned()) {
-            QHash<BrowserWindow*, WebTab*> tabsHash;
+            QMultiHash<BrowserWindow*, WebTab*> tabsHash;
             tabsHash.insert(window, webTab);
 
             detachTabsTo(targetWindow, tabsHash);
diff --git a/src/plugins/TabManager/tabmanagerwidget.h b/src/plugins/TabManager/tabmanagerwidget.h
index 2028afee3..9ded6857f 100644
--- a/src/plugins/TabManager/tabmanagerwidget.h
+++ b/src/plugins/TabManager/tabmanagerwidget.h
@@ -20,7 +20,7 @@
 
 #include <QWidget>
 #include <QPointer>
-#include <QHash>
+#include <QMultiHash>
 #include <QTreeWidgetItem>
 
 namespace Ui
@@ -68,10 +68,10 @@ public:
     explicit TabManagerWidget(BrowserWindow* mainClass, QWidget* parent = 0, bool defaultWidget = false);
     ~TabManagerWidget() override;
 
-    void closeSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash);
-    void detachSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash);
-    bool bookmarkSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash);
-    void unloadSelectedTabs(const QHash<BrowserWindow*, WebTab*> &tabsHash);
+    void closeSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash);
+    void detachSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash);
+    bool bookmarkSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash);
+    void unloadSelectedTabs(const QMultiHash<BrowserWindow*, WebTab*> &tabsHash);
 
     void setGroupType(GroupType type);
 
diff --git a/src/plugins/TabManager/tldextractor/tldextractor.cpp b/src/plugins/TabManager/tldextractor/tldextractor.cpp
index 6305608ce..a9b4e52b0 100644
--- a/src/plugins/TabManager/tldextractor/tldextractor.cpp
+++ b/src/plugins/TabManager/tldextractor/tldextractor.cpp
@@ -321,12 +321,12 @@ bool TLDExtractor::parseData(const QString &dataFile, bool loadPrivateDomains)
         line = line.left(line.indexOf(QLatin1Char(' ')));
 
         if (!line.contains(QLatin1Char('.'))) {
-            m_tldHash.insertMulti(line, line);
+            m_tldHash.insert(line, line);
         }
         else {
             QString key = line.mid(line.lastIndexOf(QLatin1Char('.')) + 1);
 
-            m_tldHash.insertMulti(key, line);
+            m_tldHash.insert(key, line);
         }
     }