diff --git a/src/core/micamaterial.cpp b/src/core/micamaterial.cpp
index ad647c1..3d4af8a 100644
--- a/src/core/micamaterial.cpp
+++ b/src/core/micamaterial.cpp
@@ -96,15 +96,15 @@ Q_GLOBAL_STATIC(MicaMaterialData, g_micaMaterialData)
 }
 #else // !FRAMELESSHELPER_CORE_NO_PRIVATE
 template<const int shift>
-[[nodiscard]] static inline int qt_static_shift(const int value)
+[[nodiscard]] static inline constexpr int qt_static_shift(const int value)
 {
-    if (shift == 0) {
+    if constexpr (shift == 0) {
         return value;
-    }
-    if (shift > 0) {
+    } else if constexpr (shift > 0) {
         return (value << (quint32(shift) & 0x1f));
+    } else {
+        return (value >> (quint32(-shift) & 0x1f));
     }
-    return (value >> (quint32(-shift) & 0x1f));
 }
 
 template<const int aprec, const int zprec>
@@ -155,9 +155,16 @@ static inline void qt_blurrow(QImage &im, const int line, const int alpha)
 
     int zR = 0, zG = 0, zB = 0, zA = 0;
 
+#ifdef Q_CC_MSVC
+#  pragma warning(push)
+#  pragma warning(disable:4127) // false alarm.
+#endif // Q_CC_MSVC
     if (alphaOnly && (im.format() != QImage::Format_Indexed8)) {
         bptr += alphaIndex;
     }
+#ifdef Q_CC_MSVC
+#  pragma warning(pop)
+#endif // Q_CC_MSVC
 
     const int stride = (im.depth() >> 3);
     const int im_width = im.width();
diff --git a/src/quick/framelessquickhelper.cpp b/src/quick/framelessquickhelper.cpp
index dfbf661..16663cb 100644
--- a/src/quick/framelessquickhelper.cpp
+++ b/src/quick/framelessquickhelper.cpp
@@ -622,20 +622,20 @@ FramelessQuickHelper *FramelessQuickHelperPrivate::findOrCreateFramelessHelper(Q
     }
     QObject *parent = nullptr;
     QQuickItem *parentItem = nullptr;
-    if (const auto window = qobject_cast<QQuickWindow *>(object)) {
-        if (QQuickItem * const item = window->contentItem()) {
+    if (const auto objWindow = qobject_cast<QQuickWindow *>(object)) {
+        if (QQuickItem * const item = objWindow->contentItem()) {
             parent = item;
             parentItem = item;
         } else {
-            parent = window;
+            parent = objWindow;
         }
     } else if (const auto item = qobject_cast<QQuickItem *>(object)) {
-        if (QQuickWindow * const window = item->window()) {
-            if (QQuickItem * const contentItem = window->contentItem()) {
+        if (QQuickWindow * const itemWindow = item->window()) {
+            if (QQuickItem * const contentItem = itemWindow->contentItem()) {
                 parent = contentItem;
                 parentItem = contentItem;
             } else {
-                parent = window;
+                parent = itemWindow;
                 parentItem = item;
             }
         } else {