diff -r 30cb5e836736 -r 0abada2a9802 src/mainwindow.cpp
--- a/src/mainwindow.cpp	Sat Feb 01 17:20:10 2020 +0200
+++ b/src/mainwindow.cpp	Sun Feb 02 00:30:48 2020 +0200
@@ -45,6 +45,11 @@
 	{ offsetof(Ui_MainWindow, actionRenderStyleRandom), gl::RenderStyle::RandomColors },
 };
 
+class A : public QSettings
+{
+	using QSettings::QSettings;
+};
+
 MainWindow::MainWindow(QWidget *parent) :
 	QMainWindow{parent},
 	ui{std::make_unique<Ui_MainWindow>()},
@@ -197,7 +202,7 @@
 				document->restoreSplitterState(this->documentSplitterState);
 			}
 		}
-		this->settings.setValue("MainWindow/DocumentSplitterState", this->documentSplitterState);
+		this->settings.setMainSplitterState(this->documentSplitterState);
 	}
 }
 
@@ -290,16 +295,16 @@
  */
 void MainWindow::saveSettings()
 {
-	this->settings.setValue("MainWindow/Geometry", this->saveGeometry());
-	this->settings.setValue("MainWindow/RecentlyOpened", this->recentlyOpenedFiles);
-	this->settings.setValue("MainWindow/DocumentSplitterState", this->documentSplitterState);
-	this->settings.setValue("MainWindow/RenderStyle", static_cast<int>(this->renderPreferences.style));
+	this->settings.setMainWindowGeometry(this->saveGeometry());
+	this->settings.setRecentFiles(this->recentlyOpenedFiles);
+	this->settings.setMainSplitterState(this->documentSplitterState);
+	this->settings.setRenderStyle(static_cast<int>(this->renderPreferences.style));
 	this->libraries.storeToSettings(&this->settings);
 }
 
 void MainWindow::restoreStartupSettings()
 {
-	this->restoreGeometry(this->settings.value("MainWindow/Geometry").toByteArray());
+	this->restoreGeometry(this->settings.mainWindowGeometry());
 }
 
 /**
@@ -307,18 +312,14 @@
  */
 void MainWindow::restoreSettings()
 {
-	this->recentlyOpenedFiles = this->settings.value("MainWindow/RecentlyOpened").toStringList();
-	this->documentSplitterState = this->settings.value("MainWindow/DocumentSplitterState").toByteArray();
-	this->renderPreferences.style = static_cast<gl::RenderStyle>(this->settings.value("Render/Style").toInt());
-	this->renderPreferences.mainColor = this->settings.value(
-		"Render/MainColor",
-		gl::RenderPreferences{}.mainColor).toString();
-	this->renderPreferences.backgroundColor = this->settings.value(
-		"Render/BackgroundColor",
-		gl::RenderPreferences{}.backgroundColor).toString();
+	this->recentlyOpenedFiles = this->settings.recentFiles();
+	this->documentSplitterState = this->settings.mainSplitterState();
+	this->renderPreferences.style = static_cast<gl::RenderStyle>(this->settings.renderStyle());
+	this->renderPreferences.mainColor = this->settings.mainColor();
+	this->renderPreferences.backgroundColor = this->settings.backgroundColor();
 	const QString systemLocale = QLocale::system().name();
-	const QVariant defaultLocale = this->settings.value("locale", systemLocale);
-	changeLanguage(defaultLocale.toString());
+	const QVariant defaultLocale = this->settings.locale();
+	this->changeLanguage(defaultLocale.toString());
 	this->libraries.restoreFromSettings(&this->settings);
 	this->updateRecentlyOpenedDocumentsMenu();
 	this->loadColors();