diff --git a/src/gui/image/qicon.cpp b/src/gui/image/qicon.cpp
index 1e4a9ebe8c..aa39e91863 100644
--- a/src/gui/image/qicon.cpp
+++ b/src/gui/image/qicon.cpp
@@ -1032,7 +1032,7 @@ void QIcon::addFile(const QString &fileName, const QSize &size, Mode mode, State
     d->engine->addFile(fileName, size, mode, state);
 
     // Check if a "@2x" file exists and add it.
-    static bool disable2xImageLoading = !qgetenv("QT_HIGHDPI_DISABLE_2X_IMAGE_LOADING").isEmpty();
+    static bool disable2xImageLoading = !qEnvironmentVariableIsEmpty("QT_HIGHDPI_DISABLE_2X_IMAGE_LOADING");
     if (!disable2xImageLoading && qApp->devicePixelRatio() > 1.0) {
         int dotIndex = fileName.lastIndexOf(QLatin1Char('.'));
         if (dotIndex != -1) {