diff --git a/shell/main.cpp b/shell/main.cpp
--- a/shell/main.cpp
+++ b/shell/main.cpp
@@ -52,6 +52,8 @@
     if (!qEnvironmentVariableIsSet("PLASMA_USE_QT_SCALING")) {
         qunsetenv("QT_DEVICE_PIXEL_RATIO");
         QCoreApplication::setAttribute(Qt::AA_DisableHighDpiScaling);
+    } else {
+        QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
     }
 
     QQuickWindow::setDefaultAlphaBuffer(true);