diff --git a/src/quick/quickstandardtitlebar.cpp b/src/quick/quickstandardtitlebar.cpp
index 97e848e8..1bb665b6 100644
--- a/src/quick/quickstandardtitlebar.cpp
+++ b/src/quick/quickstandardtitlebar.cpp
@@ -245,7 +245,7 @@ void QuickStandardTitleBar::setWindowIcon(const QVariant &value)
 
 void QuickStandardTitleBar::updateMaximizeButton()
 {
-#if (!defined(Q_OS_MACOS) && FRAMELESSHELPER_CONFIG(system_button))
+#if (FRAMELESSHELPER_CONFIG(system_button) && defined(Q_OS_LINUX))
     const QQuickWindow * const w = window();
     if (!w) {
         return;
diff --git a/src/widgets/standardtitlebar.cpp b/src/widgets/standardtitlebar.cpp
index 398e5bbd..a1de43dd 100644
--- a/src/widgets/standardtitlebar.cpp
+++ b/src/widgets/standardtitlebar.cpp
@@ -293,7 +293,7 @@ bool StandardTitleBarPrivate::isInTitleBarIconArea(const QPoint &pos) const
 
 void StandardTitleBarPrivate::updateMaximizeButton()
 {
-#if (!defined(Q_OS_MACOS) && FRAMELESSHELPER_CONFIG(system_button))
+#if (FRAMELESSHELPER_CONFIG(system_button) && defined(Q_OS_LINUX))
     const bool max = window->isMaximized();
     maximizeButton->setButtonType(max ? SystemButtonType::Restore : SystemButtonType::Maximize);
     maximizeButton->setToolTip(max ? tr("Restore") : tr("Maximize"));