diff --git a/misc/dbusnotification.cpp b/misc/dbusnotification.cpp
index 7729614..f7c1867 100644
--- a/misc/dbusnotification.cpp
+++ b/misc/dbusnotification.cpp
@@ -362,8 +362,8 @@ bool DBusNotification::queryCapabilities(const std::function<void(Capabilities &
     }
 
     // invoke GetCapabilities() and pass the return value to the callback when available
-    const auto *const watcher = new QDBusPendingCallWatcher(s_dbusInterface->GetCapabilities());
-    connect(watcher, &QDBusPendingCallWatcher::finished, [&callback](QDBusPendingCallWatcher *watcher) {
+    const auto *const newWatcher = new QDBusPendingCallWatcher(s_dbusInterface->GetCapabilities());
+    connect(newWatcher, &QDBusPendingCallWatcher::finished, [&callback](QDBusPendingCallWatcher *watcher) {
         watcher->deleteLater();
         const QDBusPendingReply<QStringList> returnValue(*watcher);
         if (returnValue.isError()) {
diff --git a/paletteeditor/paletteeditor.cpp b/paletteeditor/paletteeditor.cpp
index 8142d8a..4b9917c 100644
--- a/paletteeditor/paletteeditor.cpp
+++ b/paletteeditor/paletteeditor.cpp
@@ -327,7 +327,7 @@ bool PaletteModel::setData(const QModelIndex &index, const QVariant &value, int
                 m_parentPalette.brush(QPalette::Inactive, static_cast<QPalette::ColorRole>(r)));
             m_palette.setBrush(QPalette::Disabled, static_cast<QPalette::ColorRole>(r),
                 m_parentPalette.brush(QPalette::Disabled, static_cast<QPalette::ColorRole>(r)));
-            mask &= ~(1 << index.row());
+            mask &= ~static_cast<decltype(mask)>(1 << index.row());
         }
         m_palette.
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
diff --git a/resources/qtconfigarguments.cpp b/resources/qtconfigarguments.cpp
index ba154d6..7de67e9 100644
--- a/resources/qtconfigarguments.cpp
+++ b/resources/qtconfigarguments.cpp
@@ -132,7 +132,7 @@ void QtConfigArguments::applySettings(bool preventApplyingDefaultFont) const
             QIcon::setThemeName(QString::fromLocal8Bit(*i));
             if (++i != end) {
                 QStringList searchPaths;
-                searchPaths.reserve(m_iconThemeArg.values().size() - 1);
+                searchPaths.reserve(static_cast<QStringList::size_type>(m_iconThemeArg.values().size() - 1));
                 for (; i != end; ++i) {
                     searchPaths << QString::fromLocal8Bit(*i);
                 }
@@ -179,7 +179,7 @@ void QtConfigArguments::applySettings(bool preventApplyingDefaultFont) const
 #endif
     if (m_libraryPathsArg.isPresent()) {
         QStringList libraryPaths;
-        libraryPaths.reserve(m_libraryPathsArg.values().size());
+        libraryPaths.reserve(static_cast<QStringList::size_type>(m_libraryPathsArg.values().size()));
         for (const auto &path : m_libraryPathsArg.values()) {
             libraryPaths << QString::fromLocal8Bit(path);
         }
diff --git a/widgets/iconbutton.cpp b/widgets/iconbutton.cpp
index fde1958..d2cf8e1 100644
--- a/widgets/iconbutton.cpp
+++ b/widgets/iconbutton.cpp
@@ -80,7 +80,7 @@ QSize IconButton::sizeHint() const
 #else
     const qreal pixmapRatio = 1.0;
 #endif
-    return QSize(m_pixmap.width() / pixmapRatio, m_pixmap.height() / pixmapRatio);
+    return QSize(static_cast<int>(m_pixmap.width() / pixmapRatio), static_cast<int>(m_pixmap.height() / pixmapRatio));
 }
 
 void IconButton::paintEvent(QPaintEvent *)
@@ -90,12 +90,12 @@ void IconButton::paintEvent(QPaintEvent *)
 #else
     const qreal pixmapRatio = 1.0;
 #endif
-    QStylePainter painter(this);
-    QRect pixmapRect = QRect(0, 0, m_pixmap.width() / pixmapRatio, m_pixmap.height() / pixmapRatio);
+    auto painter = QStylePainter(this);
+    auto pixmapRect = QRect(0, 0, static_cast<int>(m_pixmap.width() / pixmapRatio), static_cast<int>(m_pixmap.height() / pixmapRatio));
     pixmapRect.moveCenter(rect().center());
     painter.drawPixmap(pixmapRect, m_pixmap);
     if (hasFocus()) {
-        QStyleOptionFocusRect focusOption;
+        auto focusOption = QStyleOptionFocusRect();
         focusOption.initFrom(this);
         focusOption.rect = pixmapRect;
 #ifdef Q_OS_MAC