diff --git a/src/dbus/qdbusserver.cpp b/src/dbus/qdbusserver.cpp
index a2dfb86164e..3ac5c794e1b 100644
--- a/src/dbus/qdbusserver.cpp
+++ b/src/dbus/qdbusserver.cpp
@@ -109,12 +109,16 @@ QDBusServer::QDBusServer(QObject *parent)
 */
 QDBusServer::~QDBusServer()
 {
-    QWriteLocker locker(&d->lock);
+    QMutex *managerMutex = nullptr;
+    if (QDBusConnectionManager::instance())
+        managerMutex = &QDBusConnectionManager::instance()->mutex;
+    QMutexLocker locker(managerMutex);
+    QWriteLocker writeLocker(&d->lock);
     if (QDBusConnectionManager::instance()) {
-        QMutexLocker locker(&QDBusConnectionManager::instance()->mutex);
         for (const QString &name : qAsConst(d->serverConnectionNames))
             QDBusConnectionManager::instance()->removeConnection(name);
         d->serverConnectionNames.clear();
+        locker.unlock();
     }
     d->serverObject = nullptr;
     d->ref.store(0);