@ -1301,7 +1301,7 @@ class ElectrumWindow(QMainWindow):
QMessageBox.warning(self, _('Error'), _('Invalid value'), _('OK'))
cfg = SimpleConfig()
cfg.config["gui"] = str(gui.currentText()).lower()
cfg.set_key("gui", str(gui.currentText()).lower())
cfg.save_config()
self.set_expert_mode(cb.isChecked())