diff --git a/scriptengines/javascript/simplebindings/qscriptbookkeeping.cpp b/scriptengines/javascript/simplebindings/qscriptbookkeeping.cpp
index 329ab41c1..aca698c67 100644
--- a/scriptengines/javascript/simplebindings/qscriptbookkeeping.cpp
+++ b/scriptengines/javascript/simplebindings/qscriptbookkeeping.cpp
@@ -185,6 +185,42 @@ void extenderFromQScriptValue(const QScriptValue &scriptValue, ExtenderPtr &exte
     extender = static_cast<Plasma::Extender *>(obj);
 }
 
+typedef Plasma::Service *ServicePtr;
+QScriptValue qScriptValueFromService(QScriptEngine *engine, const ServicePtr &service)
+{
+    return engine->newQObject(const_cast<Plasma::Service *>(service), QScriptEngine::AutoOwnership, QScriptEngine::PreferExistingWrapperObject);
+}
+
+void serviceFromQScriptValue(const QScriptValue &scriptValue, ServicePtr &service)
+{
+    QObject *obj = scriptValue.toQObject();
+    service = static_cast<Plasma::Service *>(obj);
+}
+
+typedef Plasma::DataEngine *DataEnginePtr;
+QScriptValue qScriptValueFromDataEngine(QScriptEngine *engine, const DataEnginePtr &dataEngine)
+{
+    return engine->newQObject(const_cast<Plasma::DataEngine *>(dataEngine), QScriptEngine::AutoOwnership, QScriptEngine::PreferExistingWrapperObject);
+}
+
+void dataEngineFromQScriptValue(const QScriptValue &scriptValue, DataEnginePtr &dataEngine)
+{
+    QObject *obj = scriptValue.toQObject();
+    dataEngine = static_cast<Plasma::DataEngine *>(obj);
+}
+
+typedef Plasma::ServiceJob *ServiceJobPtr;
+QScriptValue qScriptValueFromServiceJob(QScriptEngine *engine, const ServiceJobPtr &serviceJob)
+{
+    return engine->newQObject(const_cast<Plasma::ServiceJob *>(serviceJob), QScriptEngine::AutoOwnership, QScriptEngine::PreferExistingWrapperObject);
+}
+
+void serviceJobFromQScriptValue(const QScriptValue &scriptValue, ServiceJobPtr &serviceJob)
+{
+    QObject *obj = scriptValue.toQObject();
+    serviceJob = static_cast<Plasma::ServiceJob *>(obj);
+}
+
 void registerSimpleAppletMetaTypes(QScriptEngine *engine)
 {
     qScriptRegisterMetaType<QGraphicsWidget*>(engine, qScriptValueFromQGraphicsWidget, qGraphicsWidgetFromQScriptValue);
@@ -194,9 +230,12 @@ void registerSimpleAppletMetaTypes(QScriptEngine *engine)
     qScriptRegisterMetaType<KIO::Job *>(engine, qScriptValueFromKIOJob, qKIOJobFromQScriptValue);
 
     qScriptRegisterMetaType<Plasma::Animation *>(engine, qScriptValueFromAnimation, abstractAnimationFromQScriptValue);
+    qScriptRegisterMetaType<Plasma::Extender *>(engine, qScriptValueFromExtender , extenderFromQScriptValue);
+    qScriptRegisterMetaType<Plasma::VideoWidget::Controls>(engine, qScriptValueFromControls, controlsFromScriptValue, QScriptValue());
     qRegisterMetaType<DataEngine::Data>("Plasma::DataEngine::Data");
     qRegisterMetaType<DataEngine::Data>("DataEngine::Data");
     qScriptRegisterMapMetaType<DataEngine::Data>(engine);
-    qScriptRegisterMetaType<Plasma::Extender *>(engine, qScriptValueFromExtender , extenderFromQScriptValue);
-    qScriptRegisterMetaType<Plasma::VideoWidget::Controls>(engine, qScriptValueFromControls, controlsFromScriptValue, QScriptValue());
+    qScriptRegisterMetaType<Plasma::Service *>(engine, qScriptValueFromService, serviceFromQScriptValue);
+    qScriptRegisterMetaType<Plasma::DataEngine *>(engine, qScriptValueFromDataEngine, dataEngineFromQScriptValue);
+    qScriptRegisterMetaType<Plasma::ServiceJob *>(engine, qScriptValueFromServiceJob, serviceJobFromQScriptValue);
 }
diff --git a/scriptengines/javascript/simplejavascriptapplet.cpp b/scriptengines/javascript/simplejavascriptapplet.cpp
index 29c13f37e..279769a2b 100644
--- a/scriptengines/javascript/simplejavascriptapplet.cpp
+++ b/scriptengines/javascript/simplejavascriptapplet.cpp
@@ -534,13 +534,6 @@ void SimpleJavaScriptApplet::setupObjects()
     global.setProperty("AnimationGroup", m_engine->newFunction(SimpleJavaScriptApplet::animationGroup));
     global.setProperty("ParallelAnimationGroup", m_engine->newFunction(SimpleJavaScriptApplet::parallelAnimationGroup));
 
-    // Bindings for data engine
-    m_engine->setDefaultPrototype(qMetaTypeId<DataEngine*>(), m_engine->newQObject(new DataEngine(), QScriptEngine::ScriptOwnership));
-    m_engine->setDefaultPrototype(qMetaTypeId<Service*>(), m_engine->newQObject(new DummyService(), QScriptEngine::ScriptOwnership));
-    m_engine->setDefaultPrototype(qMetaTypeId<ServiceJob*>(),
-                                  m_engine->newQObject(new ServiceJob(QString(), QString(), QMap<QString, QVariant>()),
-                                                       QScriptEngine::ScriptOwnership ));
-
     bindI18N(m_engine);
     global.setProperty("dataEngine", m_engine->newFunction(SimpleJavaScriptApplet::dataEngine));
     global.setProperty("service", m_engine->newFunction(SimpleJavaScriptApplet::service));