diff --git a/gui/dbmergerdialog.h b/gui/dbmergerdialog.h
index d564964..ac0caab 100644
--- a/gui/dbmergerdialog.h
+++ b/gui/dbmergerdialog.h
@@ -14,7 +14,7 @@ class DbMergerDialog : public QDialog
 
 public:
 	explicit DbMergerDialog(QWidget *parent = nullptr);
-	~DbMergerDialog();
+	~DbMergerDialog() override;
 
 	static void merge(QWidget *parent = nullptr);
 
diff --git a/gui/settingsdialog.h b/gui/settingsdialog.h
index d304ba9..cef4900 100644
--- a/gui/settingsdialog.h
+++ b/gui/settingsdialog.h
@@ -24,7 +24,7 @@ public slots:
 	QHash<QString, QWidget*> _settingsWidgets;
 
 	explicit SettingsDialog(QWidget *parent = nullptr);
-	~SettingsDialog();
+	~SettingsDialog() override;
 
 	void createWidgets(QWidget *parent,
 					   QFormLayout *layout,
diff --git a/gui/traycontrol.h b/gui/traycontrol.h
index 6ec9f94..a87bd7a 100644
--- a/gui/traycontrol.h
+++ b/gui/traycontrol.h
@@ -14,7 +14,7 @@ class TrayControl : public QObject
 
 public:
 	explicit TrayControl(QObject *parent = nullptr);
-	~TrayControl();
+	~TrayControl() override;
 
 	void show();
 
diff --git a/gui/widgets/editpackageswidget.h b/gui/widgets/editpackageswidget.h
index 5ef0bd3..162b8aa 100644
--- a/gui/widgets/editpackageswidget.h
+++ b/gui/widgets/editpackageswidget.h
@@ -28,7 +28,7 @@ class EditPackagesWidget : public QWidget
 
 public:
 	explicit EditPackagesWidget(QWidget *parent = nullptr);
-	~EditPackagesWidget();
+	~EditPackagesWidget() override;
 
 	QStringList packages() const;
 
diff --git a/gui/widgets/extrafilterswidget.cpp b/gui/widgets/extrafilterswidget.cpp
index 1ef10d5..aecf8ca 100644
--- a/gui/widgets/extrafilterswidget.cpp
+++ b/gui/widgets/extrafilterswidget.cpp
@@ -85,7 +85,7 @@ void ExtraFiltersWidget::addFilter(const ExtraFilter &filter)
 	box->setCurrentIndex(filter.mode);
 	connect(box, QOverload<int>::of(&QComboBox::currentIndexChanged),
 			this, [item](int index){
-		item->setData(1, Qt::UserRole, QVariant::fromValue((FilterInfo::Mode)index));
+		item->setData(1, Qt::UserRole, QVariant::fromValue(static_cast<FilterInfo::Mode>(index)));
 	});
 	_ui->treeWidget->setItemWidget(item, 1, box);
 }
diff --git a/gui/widgets/extrafilterswidget.h b/gui/widgets/extrafilterswidget.h
index 28ebaf9..e51fa29 100644
--- a/gui/widgets/extrafilterswidget.h
+++ b/gui/widgets/extrafilterswidget.h
@@ -17,7 +17,7 @@ class ExtraFiltersWidget : public QWidget
 
 public:
 	explicit ExtraFiltersWidget(QWidget *parent = nullptr);
-	~ExtraFiltersWidget();
+	~ExtraFiltersWidget() override;
 
 	QList<ExtraFilter> extraFilters() const;
 
diff --git a/gui/widgets/filterswidget.h b/gui/widgets/filterswidget.h
index 918c0eb..e32fc7c 100644
--- a/gui/widgets/filterswidget.h
+++ b/gui/widgets/filterswidget.h
@@ -42,7 +42,7 @@ class FiltersWidget : public QWidget
 
 public:
 	explicit FiltersWidget(QWidget *parent = nullptr);
-	~FiltersWidget();
+	~FiltersWidget() override;
 
 	QMap<QString, FilterInfo> filters() const;
 
diff --git a/gui/widgets/globalfilterwidget.h b/gui/widgets/globalfilterwidget.h
index ed33d0f..b679537 100644
--- a/gui/widgets/globalfilterwidget.h
+++ b/gui/widgets/globalfilterwidget.h
@@ -16,7 +16,7 @@ class GlobalFilterWidget : public QWidget
 
 public:
 	explicit GlobalFilterWidget(QWidget *parent = nullptr);
-	~GlobalFilterWidget();
+	~GlobalFilterWidget() override;
 
 	FilterInfo::Mode mode() const;
 
diff --git a/gui/widgets/unclearpackageswidget.cpp b/gui/widgets/unclearpackageswidget.cpp
index f62532a..57a8a6b 100644
--- a/gui/widgets/unclearpackageswidget.cpp
+++ b/gui/widgets/unclearpackageswidget.cpp
@@ -1,3 +1,5 @@
+#include <utility>
+
 #include "unclearpackageswidget.h"
 #include "ui_unclearpackageswidget.h"
 
@@ -5,6 +7,7 @@
 #include <QPushButton>
 #include <QHeaderView>
 #include <QMouseEvent>
+#include <utility>
 
 UnclearPackagesWidget::UnclearPackagesWidget(QWidget *parent) :
 	QWidget(parent),
@@ -72,9 +75,9 @@ void UnclearPackagesWidget::setPackages(UnclearHelper packages)
 
 
 
-UnclearHelper::UnclearHelper(const QList<UnclearPackageInfo> &packages, const QList<UnclearPackageInfo> &ignored) :
-	sync(packages),
-	ignore(ignored)
+UnclearHelper::UnclearHelper(QList<UnclearPackageInfo> packages, QList<UnclearPackageInfo> ignored) :
+	sync(std::move(packages)),
+	ignore(std::move(ignored))
 {}
 
 
diff --git a/gui/widgets/unclearpackageswidget.h b/gui/widgets/unclearpackageswidget.h
index 5e9d0d1..8221e8f 100644
--- a/gui/widgets/unclearpackageswidget.h
+++ b/gui/widgets/unclearpackageswidget.h
@@ -40,8 +40,8 @@ class UnclearDelegate : public QStyledItemDelegate
 class UnclearHelper
 {
 public:
-	UnclearHelper(const QList<UnclearPackageInfo> &sync = {},
-				  const QList<UnclearPackageInfo> &ignore = {});
+	UnclearHelper(QList<UnclearPackageInfo> sync = {},
+				  QList<UnclearPackageInfo> ignore = {});
 
 	QList<UnclearPackageInfo> sync;
 	QList<UnclearPackageInfo> ignore;
@@ -61,7 +61,7 @@ class UnclearPackagesWidget : public QWidget
 	Q_ENUM(ExtraRoles)
 
 	explicit UnclearPackagesWidget(QWidget *parent = nullptr);
-	~UnclearPackagesWidget();
+	~UnclearPackagesWidget() override;
 
 	UnclearHelper packages() const;
 
diff --git a/gui/wizard/databasewizard.h b/gui/wizard/databasewizard.h
index 1cfd67c..ead3f7b 100644
--- a/gui/wizard/databasewizard.h
+++ b/gui/wizard/databasewizard.h
@@ -8,7 +8,7 @@ class DatabaseWizard : public QWizard
 	Q_OBJECT
 public:
 	explicit DatabaseWizard(QWidget *parent = nullptr);
-	~DatabaseWizard();
+	~DatabaseWizard() override;
 
 	static bool run();
 
diff --git a/gui/wizard/dbpathpage.h b/gui/wizard/dbpathpage.h
index 33c281e..e565590 100644
--- a/gui/wizard/dbpathpage.h
+++ b/gui/wizard/dbpathpage.h
@@ -13,7 +13,7 @@ class DbPathPage : public QWizardPage
 
 public:
 	explicit DbPathPage(QWidget *parent = nullptr);
-	~DbPathPage();
+	~DbPathPage() override;
 
 	void initializePage() override;
 	void cleanupPage() override;
diff --git a/gui/wizard/dbselectionpage.h b/gui/wizard/dbselectionpage.h
index e615181..d1e0823 100644
--- a/gui/wizard/dbselectionpage.h
+++ b/gui/wizard/dbselectionpage.h
@@ -13,7 +13,7 @@ class DbSelectionPage : public QWizardPage
 
 public:
 	explicit DbSelectionPage(QWidget *parent = nullptr);
-	~DbSelectionPage();
+	~DbSelectionPage() override;
 
 	void cleanupPage() override;
 
diff --git a/gui/wizard/dbwidgetpage.h b/gui/wizard/dbwidgetpage.h
index eae1983..b5c50a8 100644
--- a/gui/wizard/dbwidgetpage.h
+++ b/gui/wizard/dbwidgetpage.h
@@ -4,6 +4,7 @@
 #include <QWizardPage>
 #include <QMetaProperty>
 #include <QVBoxLayout>
+#include <utility>
 #include <databasecontroller.h>
 
 template <typename T>
@@ -11,7 +12,7 @@ class DbWidgetPage : public QWizardPage
 {
 public:
 	explicit DbWidgetPage(const QString &fieldName,
-						  const QByteArray &dbProperty,
+						  QByteArray dbProperty,
 						  QWidget *parent = nullptr);
 
 	void initializePage() override;
@@ -27,10 +28,10 @@ class DbWidgetPage : public QWizardPage
 };
 
 template <typename T>
-DbWidgetPage<T>::DbWidgetPage(const QString &fieldName, const QByteArray &dbProperty, QWidget *parent) :
+DbWidgetPage<T>::DbWidgetPage(const QString &fieldName, QByteArray dbProperty, QWidget *parent) :
 	QWizardPage(parent),
 	widget(new T(this)),
-	_dbProperty(dbProperty)
+	_dbProperty(std::move(dbProperty))
 {
 	setLayout(new QVBoxLayout(this));
 	layout()->addWidget(widget);
diff --git a/lib/comboboxconfig.cpp b/lib/comboboxconfig.cpp
index 72ec4cb..388a087 100644
--- a/lib/comboboxconfig.cpp
+++ b/lib/comboboxconfig.cpp
@@ -1,9 +1,11 @@
 #include "comboboxconfig.h"
 
+#include <utility>
+
 ComboboxConfig::ComboboxConfig(QStringList displayNames, QList<QVariant> values, QVariant defaultValue, bool editable) :
-	displayNames(displayNames),
-	values(values),
-	defaultValue(defaultValue),
+	displayNames(std::move(displayNames)),
+	values(std::move(values)),
+	defaultValue(std::move(defaultValue)),
 	editable(editable)
 {}
 
diff --git a/lib/databasemerger.cpp b/lib/databasemerger.cpp
index bc4fe8c..adf7884 100644
--- a/lib/databasemerger.cpp
+++ b/lib/databasemerger.cpp
@@ -23,8 +23,8 @@ bool DatabaseMerger::mergeDb(QString dbPath)
 		if(!otherFile.open(QIODevice::ReadOnly))
 			throw DatabaseException(otherFile.errorString());
 
-		PackageDatabase pacDbCurrent = _js->deserializeFrom<PackageDatabase>(&currentFile);
-		PackageDatabase pacDbOther = _js->deserializeFrom<PackageDatabase>(&otherFile);
+		auto pacDbCurrent = _js->deserializeFrom<PackageDatabase>(&currentFile);
+		auto pacDbOther = _js->deserializeFrom<PackageDatabase>(&otherFile);
 		otherFile.close();
 
 		//packages: keep install on conflict
diff --git a/lib/packagedatabase.cpp b/lib/packagedatabase.cpp
index d39287b..1dcb2c2 100644
--- a/lib/packagedatabase.cpp
+++ b/lib/packagedatabase.cpp
@@ -1,7 +1,9 @@
 #include "packagedatabase.h"
 
+#include <utility>
+
 PackageInfo::PackageInfo(QString name, bool removed) :
-	name(name),
+	name(std::move(name)),
 	removed(removed)
 {}
 
@@ -23,8 +25,8 @@ bool PackageInfo::equals(const PackageInfo &other) const
 
 UnclearPackageInfo::UnclearPackageInfo(QString name, QString hostName, QStringList filterNames) :
 	PackageInfo(name),
-	hostName(hostName),
-	filterNames(filterNames)
+	hostName(std::move(hostName)),
+	filterNames(std::move(filterNames))
 {}
 
 bool UnclearPackageInfo::operator ==(const UnclearPackageInfo &other) const
@@ -39,9 +41,9 @@ bool UnclearPackageInfo::equals(const UnclearPackageInfo &other) const
 			filterNames == other.filterNames;
 }
 
-FilterInfo::FilterInfo(const QString &name, const QString &plugin) :
-	name(name),
-	plugin(plugin),
+FilterInfo::FilterInfo(QString name, QString plugin) :
+	name(std::move(name)),
+	plugin(std::move(plugin)),
 	mode(Ask),
 	pluginFilters(),
 	regex()
@@ -62,7 +64,7 @@ bool FilterInfo::equals(const FilterInfo &other) const
 }
 
 ExtraFilter::ExtraFilter(QString regex, FilterInfo::Mode mode) :
-	regex(regex),
+	regex(std::move(regex)),
 	mode(mode)
 {}
 
diff --git a/lib/packagedatabase.h b/lib/packagedatabase.h
index 561cc4b..cd04bca 100644
--- a/lib/packagedatabase.h
+++ b/lib/packagedatabase.h
@@ -59,8 +59,8 @@ class LIBPAXCHANGE_SHARED_EXPORT FilterInfo
 	Q_ENUM(Mode)
 
 public:
-	FilterInfo(const QString &name = QString(),
-			   const QString &plugin = QString());
+	FilterInfo(QString name = QString(),
+			   QString plugin = QString());
 
 	QString name;
 	QString plugin;
diff --git a/lib/packagemanagerplugin.cpp b/lib/packagemanagerplugin.cpp
index 8b8cbfb..5ce462d 100644
--- a/lib/packagemanagerplugin.cpp
+++ b/lib/packagemanagerplugin.cpp
@@ -1,12 +1,11 @@
 #include "packagemanagerplugin.h"
+#include <utility>
+
 PackageManagerPlugin::PackageManagerPlugin(QObject *parent) :
 	QObject(parent)
 {}
 
-void PackageManagerPlugin::initialize()
-{
-
-}
+void PackageManagerPlugin::initialize() {}
 
 bool PackageManagerPlugin::startGuiInstall(const QStringList &packages)
 {
@@ -36,11 +35,11 @@ void PackageManagerPlugin::forwardedArguments(QStringList args)
 }
 
 PackageManagerPlugin::SettingsInfo::SettingsInfo(QString displayName, QString description, QString settingsKeys, int type, QVariant defaultValue, QByteArray widgetClassName, QVariantMap widgetProperties) :
-	displayName(displayName),
-	description(description),
-	settingsKeys(settingsKeys),
+	displayName(std::move(displayName)),
+	description(std::move(description)),
+	settingsKeys(std::move(settingsKeys)),
 	type(type),
-	defaultValue(defaultValue),
-	widgetClassName(widgetClassName),
-	widgetProperties(widgetProperties)
+	defaultValue(std::move(defaultValue)),
+	widgetClassName(std::move(widgetClassName)),
+	widgetProperties(std::move(widgetProperties))
 {}
diff --git a/lib/syncedsettings.cpp b/lib/syncedsettings.cpp
index 6f31a06..cb9853e 100644
--- a/lib/syncedsettings.cpp
+++ b/lib/syncedsettings.cpp
@@ -3,7 +3,7 @@
 #include "pluginloader.h"
 #include "syncedsettings.h"
 
-SyncedSettings::SyncedSettings(){}
+SyncedSettings::SyncedSettings() = default;
 
 SyncedSettings::~SyncedSettings()
 {
diff --git a/plugins/pacdummy/pacdummyplugin.cpp b/plugins/pacdummy/pacdummyplugin.cpp
index 176ac43..f699b67 100644
--- a/plugins/pacdummy/pacdummyplugin.cpp
+++ b/plugins/pacdummy/pacdummyplugin.cpp
@@ -95,9 +95,9 @@ QString PacDummyPlugin::installationCmd(const QStringList &packages)
 
 	bool stateChanged = false;
 	for (auto package : packages) {
-		for(int i = 0; i < _pacList.size(); i++){
-			if(_pacList[i].name == package){
-				_pacList[i].installed = true;
+		for(auto &pkg : _pacList){
+			if(pkg.name == package){
+				pkg.installed = true;
 				stateChanged = true;
 			}
 		}
@@ -136,9 +136,9 @@ QString PacDummyPlugin::uninstallationCmd(const QStringList &packages)
 
 	bool stateChanged = false;
 	for (auto package : packages) {
-		for(int i = 0; i < _pacList.size(); i++){
-			if(_pacList[i].name == package){
-				_pacList[i].installed = false;
+		for(auto &pkg : _pacList){
+			if(pkg.name == package){
+				pkg.installed = false;
 				stateChanged = true;
 			}
 		}