diff --git a/src/gamecenter/gamecenterdaemon.cpp b/src/gamecenter/gamecenterdaemon.cpp
index 162fd76..a5cfa03 100644
--- a/src/gamecenter/gamecenterdaemon.cpp
+++ b/src/gamecenter/gamecenterdaemon.cpp
@@ -3,6 +3,7 @@
 
 #include "gamecenterdaemon.h"
 
+#include <QCoreApplication>
 #include <QDBusArgument>
 #include <QDBusConnection>
 #include <QDBusConnectionInterface>
@@ -878,6 +879,47 @@ GameCenterDaemon::GameCenterDaemon(QObject *parent)
 {
 }
 
+GameCenterDaemon::~GameCenterDaemon()
+{
+    prepareForShutdown();
+}
+
+void GameCenterDaemon::prepareForShutdown()
+{
+    for (auto it = m_sessions.begin(); it != m_sessions.end(); ++it) {
+        if (it.value().scanner) {
+            it.value().scanner->cancel();
+        }
+
+        QPointer<QProcess> proc = it.value().process;
+        it.value().process = nullptr;
+        if (proc) {
+            proc->disconnect(this);
+            if (proc->state() != QProcess::NotRunning) {
+                proc->setParent(nullptr);
+            } else {
+                proc->deleteLater();
+            }
+        }
+
+        if (it.value().scanner) {
+            it.value().scanner->disconnect(this);
+            it.value().scanner->deleteLater();
+            it.value().scanner = nullptr;
+        }
+    }
+
+    for (auto it = m_unitPathWatchers.begin(); it != m_unitPathWatchers.end(); ++it) {
+        if (QObject *watcher = it.value()) {
+            watcher->deleteLater();
+        }
+    }
+
+    m_unitPathWatchers.clear();
+    m_unitPathToSessionId.clear();
+    m_unitNameToSessionId.clear();
+}
+
 bool GameCenterDaemon::init()
 {
     QDBusConnection bus = QDBusConnection::sessionBus();
@@ -897,6 +939,10 @@ bool GameCenterDaemon::init()
 
     recoverExistingSessions();
 
+    if (QCoreApplication::instance()) {
+        connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, this, &GameCenterDaemon::prepareForShutdown);
+    }
+
     return true;
 }
 
diff --git a/src/gamecenter/gamecenterdaemon.h b/src/gamecenter/gamecenterdaemon.h
index 0dd493f..0bed398 100644
--- a/src/gamecenter/gamecenterdaemon.h
+++ b/src/gamecenter/gamecenterdaemon.h
@@ -23,6 +23,7 @@ class GameCenterDaemon : public QObject
 
 public:
     explicit GameCenterDaemon(QObject *parent = nullptr);
+    ~GameCenterDaemon() override;
 
     bool init();
 
@@ -76,6 +77,8 @@ private:
     void handleSystemdUnitPropertiesChanged(const QDBusObjectPath &unitPath, const QVariantMap &changedProperties);
     void removeSessionInternal(const QString &sessionId, const QString &finalState);
 
+    void prepareForShutdown();
+
 private Q_SLOTS:
     void handleSystemdUnitNew(const QString &unitName, const QDBusObjectPath &unitPath);
     void handleSystemdUnitRemoved(const QString &unitName, const QDBusObjectPath &unitPath);