diff --git a/scripts/cppcheck.sh b/scripts/cppcheck.sh
index d35b4c53e..4b7228d97 100755
--- a/scripts/cppcheck.sh
+++ b/scripts/cppcheck.sh
@@ -5,7 +5,9 @@
 
 function check_code {
     cppcheck \
-    --enable=all \
+    -j 4 \
+    --enable=style,performance,portability,missingInclude \
+    --inline-suppr \
     --force \
     --verbose \
     . > /dev/null
diff --git a/src/lib/3rdparty/qtwin.cpp b/src/lib/3rdparty/qtwin.cpp
index 02154cc3d..d59306ec9 100644
--- a/src/lib/3rdparty/qtwin.cpp
+++ b/src/lib/3rdparty/qtwin.cpp
@@ -139,7 +139,7 @@ bool QtWin::isCompositionEnabled()
 {
 #ifdef Q_OS_WIN
     if (resolveLibs()) {
-        HRESULT hr = S_OK;
+        HRESULT hr;
         BOOL isEnabled = false;
         hr = pDwmIsCompositionEnabled(&isEnabled);
         if (SUCCEEDED(hr)) {
@@ -164,7 +164,6 @@ bool QtWin::enableBlurBehindWindow(QWidget* widget, bool enable)
 #ifdef Q_OS_WIN
     if (resolveLibs()) {
         DWM_BLURBEHIND bb = {0};
-        HRESULT hr = S_OK;
         bb.fEnable = enable;
         bb.dwFlags = DWM_BB_ENABLE;
         bb.hRgnBlur = NULL;
@@ -174,7 +173,7 @@ bool QtWin::enableBlurBehindWindow(QWidget* widget, bool enable)
         // Qt5: setting WA_TranslucentBackground without the following line hides the widget!!
         widget->setWindowOpacity(1);
 
-        hr = pDwmEnableBlurBehindWindow(hwndOfWidget(widget) , &bb);
+        HRESULT hr = pDwmEnableBlurBehindWindow(hwndOfWidget(widget) , &bb);
         if (SUCCEEDED(hr)) {
             result = true;
             windowNotifier()->addWidget(widget);
@@ -211,7 +210,7 @@ bool QtWin::extendFrameIntoClientArea(QWidget* widget, int left, int top, int ri
 #ifdef Q_OS_WIN
     if (resolveLibs()) {
         QLibrary dwmLib(QString::fromLatin1("dwmapi"));
-        HRESULT hr = S_OK;
+        HRESULT hr;
         MARGINS m = {left, right, top, bottom};
         hr = pDwmExtendFrameIntoClientArea(hwndOfWidget(widget), &m);
         if (SUCCEEDED(hr)) {
@@ -241,7 +240,7 @@ QColor QtWin::colorizationColor()
         DWORD color = 0;
         BOOL opaque = FALSE;
         QLibrary dwmLib(QString::fromLatin1("dwmapi"));
-        HRESULT hr = S_OK;
+        HRESULT hr;
         hr = pDwmGetColorizationColor(&color, &opaque);
         if (SUCCEEDED(hr)) {
             resultColor = QColor(color);
diff --git a/src/lib/3rdparty/qurlinfo.cpp b/src/lib/3rdparty/qurlinfo.cpp
index 0ebb3f6ba..e97202153 100644
--- a/src/lib/3rdparty/qurlinfo.cpp
+++ b/src/lib/3rdparty/qurlinfo.cpp
@@ -451,6 +451,10 @@ QUrlInfo::~QUrlInfo()
 
 QUrlInfo &QUrlInfo::operator=(const QUrlInfo &ui)
 {
+    if (this == &ui) {
+        return *this;
+    }
+
     if (ui.d) {
         if (!d) {
             d = new QUrlInfoPrivate;
diff --git a/src/lib/network/schemehandlers/qupzillaschemehandler.cpp b/src/lib/network/schemehandlers/qupzillaschemehandler.cpp
index 732d837ad..46bfc85be 100644
--- a/src/lib/network/schemehandlers/qupzillaschemehandler.cpp
+++ b/src/lib/network/schemehandlers/qupzillaschemehandler.cpp
@@ -394,26 +394,34 @@ QString QupZillaSchemeReply::configPage()
                       QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Themes"), mApp->THEMESDIR) +
                       QString("<dt>%1</dt><dd>%2<dd>").arg(tr("Translations"), mApp->TRANSLATIONSDIR));
 
-        QString debugBuild = tr("Disabled");
-        QString webGLEnabled = tr("Disabled");
-        QString w7APIEnabled = tr("Disabled");
-        QString KDEIntegration = tr("Disabled");
-        QString portableBuild = tr("Disabled");
-
 #ifdef QUPZILLA_DEBUG_BUILD
-        debugBuild = tr("<b>Enabled</b>");
+        QString debugBuild = tr("<b>Enabled</b>");
+#else
+        QString debugBuild = tr("Disabled");
 #endif
+
 #if defined (USE_WEBGL) || (QTWEBKIT_FROM_2_3 && defined(QZ_WS_X11))
-        webGLEnabled = tr("<b>Enabled</b>");
+        QString webGLEnabled = tr("<b>Enabled</b>");
+#else
+        QString webGLEnabled = tr("Disabled");
 #endif
+
 #if defined(Q_OS_WIN) && defined(W7API)
-        w7APIEnabled = tr("<b>Enabled</b>");
+        QString w7APIEnabled = tr("<b>Enabled</b>");
+#else
+        QString w7APIEnabled = tr("Disabled");
 #endif
+
 #if defined(QZ_WS_X11) && defined(KDE)
-        KDEIntegration = tr("<b>Enabled</b>");
+        QString KDEIntegration = tr("<b>Enabled</b>");
+#else
+        QString KDEIntegration = tr("Disabled");
 #endif
+
 #ifdef PORTABLE_BUILD
-        portableBuild = tr("<b>Enabled</b>");
+        QString portableBuild = tr("<b>Enabled</b>");
+#else
+        QString portableBuild = tr("Disabled");
 #endif
 
         cPage.replace(QLatin1String("%BUILD-CONFIG-TEXT%"),
diff --git a/src/lib/webview/tabbar.cpp b/src/lib/webview/tabbar.cpp
index 8f1215d7a..11a9bc283 100644
--- a/src/lib/webview/tabbar.cpp
+++ b/src/lib/webview/tabbar.cpp
@@ -196,7 +196,6 @@ QSize TabBar::tabSizeHint(int index) const
     QSize size = QTabBar::tabSizeHint(index);
     WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
     TabBar* tabBar = const_cast <TabBar*>(this);
-    bool adjustingActiveTab = false;
 
     if (webTab && webTab->isPinned()) {
         size.setWidth(PINNED_TAB_WIDTH);
@@ -215,6 +214,8 @@ QSize TabBar::tabSizeHint(int index) const
         else {
             int maxWidthForTab = availableWidth / normalTabsCount;
             int realTabWidth = maxWidthForTab;
+            bool adjustingActiveTab = false;
+
             if (realTabWidth < MINIMUM_ACTIVE_TAB_WIDTH) {
                 maxWidthForTab = (availableWidth - MINIMUM_ACTIVE_TAB_WIDTH) / (normalTabsCount - 1);
                 realTabWidth = MINIMUM_ACTIVE_TAB_WIDTH;
@@ -275,7 +276,6 @@ QSize TabBar::tabSizeHint(int index) const
                     else {
                         m_activeTabWidth = (availableWidth - maxWidthForTab * normalTabsCount) + maxWidthForTab;
                     }
-                    adjustingActiveTab = true;
                     size.setWidth(m_activeTabWidth);
                 }
                 else {
diff --git a/src/lib/webview/webview.cpp b/src/lib/webview/webview.cpp
index 1289905b3..3582c50ee 100644
--- a/src/lib/webview/webview.cpp
+++ b/src/lib/webview/webview.cpp
@@ -798,6 +798,7 @@ void WebView::createContextMenu(QMenu* menu, const QWebHitTestResult &hitTest, c
         m_actionStop->setEnabled(isLoading());
     }
 
+    // cppcheck-suppress variableScope
     int spellCheckActionCount = 0;
 
 #ifdef USE_HUNSPELL
@@ -821,6 +822,7 @@ void WebView::createContextMenu(QMenu* menu, const QWebHitTestResult &hitTest, c
     }
 
     if (hitTest.isContentEditable()) {
+        // This only checks if the menu is empty (only spellchecker actions added)
         if (menu->actions().count() == spellCheckActionCount) {
             QMenu* pageMenu = page()->createStandardContextMenu();
             // Apparently createStandardContextMenu() can return null pointer
diff --git a/src/plugins/MouseGestures/3rdparty/adv_recognizer.cpp b/src/plugins/MouseGestures/3rdparty/adv_recognizer.cpp
index d7201caac..4310fe38e 100644
--- a/src/plugins/MouseGestures/3rdparty/adv_recognizer.cpp
+++ b/src/plugins/MouseGestures/3rdparty/adv_recognizer.cpp
@@ -138,9 +138,10 @@ void RealTimeMouseGestureRecognizer::recognizeGesture()
 
     for (GestureList::const_iterator gi = gestures.begin(); gi != gestures.end(); ++gi) {
         int readIndex = directions.getReadPointer();
-        bool match = true;
 
         try {
+            bool match = true;
+
             for (DirectionList::const_iterator di = gi->directions.begin(); di != gi->directions.end() && match; ++di) {
                 Direction d = directions.pop();
                 if (*di != d) {