diff --git a/src/libs/utils/stylehelper.cpp b/src/libs/utils/stylehelper.cpp
index b93481ef9d4..8d8655c11b5 100644
--- a/src/libs/utils/stylehelper.cpp
+++ b/src/libs/utils/stylehelper.cpp
@@ -545,7 +545,7 @@ void StyleHelper::drawIconWithShadow(const QIcon &icon, const QRect &rect,
                                      QPainter *p, QIcon::Mode iconMode, int dipRadius, const QColor &color, const QPoint &dipOffset)
 {
     QPixmap cache;
-    const int devicePixelRatio = p->device()->devicePixelRatio();
+    const qreal devicePixelRatio = p->device()->devicePixelRatioF();
     QString pixmapName = QString::fromLatin1("icon %0 %1 %2 %3")
             .arg(icon.cacheKey()).arg(iconMode).arg(rect.height()).arg(devicePixelRatio);
 
@@ -557,7 +557,7 @@ void StyleHelper::drawIconWithShadow(const QIcon &icon, const QRect &rect,
         // pixels.
         QWindow *window = dynamic_cast<QWidget*>(p->device())->window()->windowHandle();
         QPixmap px = icon.pixmap(window, rect.size(), iconMode);
-        int radius = dipRadius * devicePixelRatio;
+        int radius = int(dipRadius * devicePixelRatio);
         QPoint offset = dipOffset * devicePixelRatio;
         cache = QPixmap(px.size() + QSize(radius * 2, radius * 2));
         cache.fill(Qt::transparent);