diff --git a/src/dbus/qdbusutil_p.h b/src/dbus/qdbusutil_p.h
index e11fe573b5f..4331fdb1d1b 100644
--- a/src/dbus/qdbusutil_p.h
+++ b/src/dbus/qdbusutil_p.h
@@ -64,7 +64,8 @@
 
 QT_BEGIN_NAMESPACE
 
-namespace QDBusUtil
+#define Q_DBUS_NO_EXPORT        // force findclasslist.pl looking into this namespace
+namespace Q_DBUS_NO_EXPORT QDBusUtil
 {
     Q_DBUS_EXPORT bool isValidInterfaceName(const QString &ifaceName);