diff --git a/src/qt_gui/settings_dialog.cpp b/src/qt_gui/settings_dialog.cpp
index ce6f59937..9a946658f 100644
--- a/src/qt_gui/settings_dialog.cpp
+++ b/src/qt_gui/settings_dialog.cpp
@@ -677,7 +677,8 @@ void SettingsDialog::UpdateSettings() {
 
     const QVector<std::string> TouchPadIndex = {"left", "center", "right", "none"};
     Config::setBackButtonBehavior(TouchPadIndex[ui->backButtonBehaviorComboBox->currentIndex()]);
-    Config::setIsFullscreen(ui->displayModeComboBox->currentText().toStdString() != "Windowed");
+    Config::setIsFullscreen(screenModeMap.value(ui->displayModeComboBox->currentText()) !=
+                            "Windowed");
     Config::setFullscreenMode(
         screenModeMap.value(ui->displayModeComboBox->currentText()).toStdString());
     Config::setIsMotionControlsEnabled(ui->motionControlsCheckBox->isChecked());