diff --git a/src/app/main.cpp b/src/app/main.cpp
index 5a49d3da4e2..ce7ed2dcb9d 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -292,8 +292,10 @@ static inline QSettings *userSettings()
 
 int main(int argc, char **argv)
 {
-    if (!qEnvironmentVariableIsSet("QT_DEVICE_PIXEL_RATIO"))
+    if (Utils::HostOsInfo().isWindowsHost()
+            && !qEnvironmentVariableIsSet("QT_DEVICE_PIXEL_RATIO")) {
         qputenv("QT_DEVICE_PIXEL_RATIO", "auto");
+    }
     QLoggingCategory::setFilterRules(QLatin1String("qtc.*.debug=false"));
 #ifdef Q_OS_MAC
     // increase the number of file that can be opened in Qt Creator.
@@ -306,7 +308,8 @@ int main(int argc, char **argv)
 
     SharedTools::QtSingleApplication app((QLatin1String(appNameC)), argc, argv);
 
-    if (!qFuzzyCompare(qApp->devicePixelRatio(), 1.0)
+    if (Utils::HostOsInfo().isWindowsHost()
+            && !qFuzzyCompare(qApp->devicePixelRatio(), 1.0)
             && QApplication::style()->objectName().startsWith(
                 QLatin1String("windows"), Qt::CaseInsensitive)) {
         QApplication::setStyle(QLatin1String("fusion"));