diff --git a/libs/widgets/session_manager.cpp b/libs/widgets/session_manager.cpp
index eb8b23f..e964af0 100644
--- a/libs/widgets/session_manager.cpp
+++ b/libs/widgets/session_manager.cpp
@@ -97,6 +97,8 @@ void SessionManager::save() {
 		sr.setValue(buttons[i].first, buttons[i].second->isChecked(), false);
 	for (int i = 0; i < stacks.size(); ++i)
 		sr.setValue(stacks[i].first, stacks[i].second->currentIndex(), false);
+	for (int i = 0; i < sliders.size(); ++i)
+		sr.setValue(sliders[i].first, sliders[i].second->value(), false);
 	for (int i = 0; i < actions.size(); ++i)
 		sr.setValue(actions[i].first, actions[i].second->isChecked(), false);
 	for (int i = 0; i < stringlists.size(); ++i)
@@ -221,6 +223,8 @@ void SessionManager::load(bool onlyMainwindow) {
 	for (int i = 0; i < stacks.size(); ++i)
 		stacks[i].second->setCurrentIndex(
 			qMin<int>(sr.getValue(stacks[i].first, stacks[i].second->currentIndex()).toInt(), stacks[i].second->count()));
+	for (int i = 0; i < sliders.size(); ++i)
+		sliders[i].second->setValue(sr.getValue(sliders[i].first, sliders[i].second->value()).toInt());
 	for (int i = 0; i < actions.size(); ++i)
 		actions[i].second->setChecked(sr.getValue(actions[i].first, actions[i].second->isChecked()).toBool());
 	for (int i = 0; i < stringlists.size(); ++i)
@@ -267,6 +271,7 @@ void SessionManager::clear(bool with_filename) {
 	tabs.clear();
 	buttons.clear();
 	stacks.clear();
+	sliders.clear();
 	actions.clear();
 	stringlists.clear();
 	strings.clear();
diff --git a/libs/widgets/session_manager.h b/libs/widgets/session_manager.h
index 8fc4618..7957796 100644
--- a/libs/widgets/session_manager.h
+++ b/libs/widgets/session_manager.h
@@ -66,6 +66,7 @@ public:
 	void addEntry(QAction * e) { addEntry(e->objectName(), e); }
 	void addEntry(QAbstractButton * e) { addEntry(e->objectName(), e); }
 	void addEntry(QStackedWidget * e) { addEntry(e->objectName(), e); }
+	void addEntry(QSlider * e) { addEntry(e->objectName(), e); }
 	void addMainWidget(QWidget * e) { addMainWidget(e->objectName(), e); }
 	void removeMainWidget(QWidget * e);
 
@@ -81,6 +82,7 @@ public:
 	void addEntry(const QString & name, QGroupBox * e) { groups.push_back(QPair<QString, QGroupBox *>(name, e)); }
 	void addEntry(const QString & name, QAbstractButton * e) { buttons.push_back(QPair<QString, QAbstractButton *>(name, e)); }
 	void addEntry(const QString & name, QStackedWidget * e) { stacks.push_back(QPair<QString, QStackedWidget *>(name, e)); }
+	void addEntry(const QString & name, QSlider * e) { sliders.push_back(QPair<QString, QSlider *>(name, e)); }
 	void addEntry(const QString & name, QAction * e) { actions.push_back(QPair<QString, QAction *>(name, e)); }
 	void addEntry(const QString & name, QStringList * e) { stringlists.push_back(QPair<QString, QStringList *>(name, e)); }
 	void addEntry(const QString & name, QString * e) { strings.push_back(QPair<QString, QString *>(name, e)); }
@@ -106,6 +108,7 @@ private:
 	QVector<QPair<QString, QGroupBox *>> groups;
 	QVector<QPair<QString, QAbstractButton *>> buttons;
 	QVector<QPair<QString, QStackedWidget *>> stacks;
+	QVector<QPair<QString, QSlider *>> sliders;
 	QVector<QPair<QString, QAction *>> actions;
 	QVector<QPair<QString, QStringList *>> stringlists;
 	QVector<QPair<QString, QString *>> strings;