diff --git a/src/app/main.cpp b/src/app/main.cpp
index 5acc468d9c5..036d169c063 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -281,7 +281,9 @@ static Utils::QtcSettings *createUserSettings()
 
 static void setHighDpiEnvironmentVariable()
 {
-    if (Utils::HostOsInfo::isMacHost() || qEnvironmentVariableIsSet("QT_SCALE_FACTOR_ROUNDING_POLICY"))
+    if (Utils::StyleHelper::defaultHighDpiScaleFactorRoundingPolicy()
+            == Qt::HighDpiScaleFactorRoundingPolicy::Unset
+        || qEnvironmentVariableIsSet("QT_SCALE_FACTOR_ROUNDING_POLICY"))
         return;
 
     std::unique_ptr<Utils::QtcSettings> settings(createUserSettings());
diff --git a/src/plugins/coreplugin/generalsettings.cpp b/src/plugins/coreplugin/generalsettings.cpp
index e7da40832d7..3a8b90b57bd 100644
--- a/src/plugins/coreplugin/generalsettings.cpp
+++ b/src/plugins/coreplugin/generalsettings.cpp
@@ -135,7 +135,8 @@ GeneralSettingsWidget::GeneralSettingsWidget()
     form.addRow({Tr::tr("Toolbar style:"), m_toolbarStyleBox, st});
     form.addRow({Tr::tr("Language:"), m_languageBox, st});
 
-    if (!Utils::HostOsInfo::isMacHost()) {
+    if (StyleHelper::defaultHighDpiScaleFactorRoundingPolicy()
+        != Qt::HighDpiScaleFactorRoundingPolicy::Unset) {
         using Policy = Qt::HighDpiScaleFactorRoundingPolicy;
         m_policyComboBox = new QComboBox;
         m_policyComboBox->addItem(Tr::tr("Round up for .5 and above"), int(Policy::Round));