diff --git a/tests/auto/qml/qjsengine/tst_qjsengine.cpp b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
index 66fef8e2dd..6f9cc93757 100644
--- a/tests/auto/qml/qjsengine/tst_qjsengine.cpp
+++ b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
@@ -899,6 +899,7 @@ void tst_QJSEngine::jsParseDate()
 void tst_QJSEngine::newQObject()
 {
     QJSEngine eng;
+    QObject temp;
 
     {
         QJSValue qobject = eng.newQObject(0);
@@ -907,11 +908,11 @@ void tst_QJSEngine::newQObject()
         QCOMPARE(qobject.toQObject(), (QObject *)0);
     }
     {
-        QJSValue qobject = eng.newQObject(this);
+        QJSValue qobject = eng.newQObject(&temp);
         QVERIFY(!qobject.isUndefined());
         QCOMPARE(qobject.isQObject(), true);
         QCOMPARE(qobject.isObject(), true);
-        QCOMPARE(qobject.toQObject(), (QObject *)this);
+        QCOMPARE(qobject.toQObject(), (QObject *)&temp);
         QVERIFY(!qobject.isCallable());
         // prototype should be QObject.prototype
         QCOMPARE(qobject.prototype().isObject(), true);
@@ -1068,6 +1069,7 @@ void tst_QJSEngine::newQObject_sameQObject()
 #if 0 // FIXME: No prototype API in QScriptEngine
 void tst_QJSEngine::newQObject_defaultPrototype()
 {
+    QObject temp;
     QScriptEngine eng;
     // newQObject() should set the default prototype, if one has been registered
     {
@@ -1076,14 +1078,14 @@ void tst_QJSEngine::newQObject_defaultPrototype()
         QScriptValue qobjectProto = eng.newObject();
         eng.setDefaultPrototype(qMetaTypeId<QObject*>(), qobjectProto);
         {
-            QScriptValue ret = eng.newQObject(this);
+            QScriptValue ret = eng.newQObject(&temp);
             QVERIFY(ret.prototype().equals(qobjectProto));
         }
         QScriptValue tstProto = eng.newObject();
         int typeId = qRegisterMetaType<tst_QJSEngine*>("tst_QJSEngine*");
         eng.setDefaultPrototype(typeId, tstProto);
         {
-            QScriptValue ret = eng.newQObject(this);
+            QScriptValue ret = eng.newQObject(temp);
             QVERIFY(ret.prototype().equals(tstProto));
         }
 
@@ -1261,7 +1263,8 @@ void tst_QJSEngine::newQMetaObject()
         QVERIFY(instanceofJS(inst, qclass3).strictlyEquals(false));
     }
     {
-        QScriptValue inst = qclass4.callAsConstructor(QScriptValueList() << eng.newQObject(this));
+        QObject temp;
+        QScriptValue inst = qclass4.callAsConstructor(QScriptValueList() << eng.newQObject(&temp));
         QVERIFY(inst.isQObject());
         QVERIFY(inst.toQObject() != 0);
         QCOMPARE(inst.toQObject()->parent(), (QObject*)this);
@@ -2887,6 +2890,7 @@ void tst_QJSEngine::castWithPrototypeChain()
     QScriptEngine eng;
     Bar bar;
     Baz baz;
+    QObject temp;
     QScriptValue barProto = eng.toScriptValue(&bar);
     QScriptValue bazProto = eng.toScriptValue(&baz);
     eng.setDefaultPrototype(qMetaTypeId<Bar*>(), barProto);
@@ -2954,7 +2958,7 @@ void tst_QJSEngine::castWithPrototypeChain()
         QVERIFY(pbar == 0);
     }
 
-    bazProto.setPrototype(eng.newQObject(this));
+    bazProto.setPrototype(eng.newQObject(&temp));
     {
         Baz *pbaz = qscriptvalue_cast<Baz*>(baz2Value);
         QVERIFY(pbaz != 0);
@@ -3756,8 +3760,9 @@ class ThreadedEngine : public QThread {
     QScriptEngine* m_engine;
 protected:
     void run() {
+        QObject temp;
         m_engine = new QScriptEngine();
-        m_engine->setGlobalObject(m_engine->newQObject(this));
+        m_engine->setGlobalObject(m_engine->newQObject(&temp));
         m_engine->evaluate("while (1) { sleep(); }");
         delete m_engine;
     }
@@ -4941,6 +4946,7 @@ void tst_QJSEngine::reentrancy_Array()
 
 void tst_QJSEngine::reentrancy_objectCreation()
 {
+    QObject temp;
     QJSEngine eng1;
     QJSEngine eng2;
     {
@@ -4957,8 +4963,8 @@ void tst_QJSEngine::reentrancy_objectCreation()
         QCOMPARE(qjsvalue_cast<QRegExp>(r2), qjsvalue_cast<QRegExp>(r1));
     }
     {
-        QJSValue o1 = eng1.newQObject(this);
-        QJSValue o2 = eng2.newQObject(this);
+        QJSValue o1 = eng1.newQObject(&temp);
+        QJSValue o2 = eng2.newQObject(&temp);
         QCOMPARE(o1.toQObject(), o2.toQObject());
         QCOMPARE(o2.toQObject(), o1.toQObject());
     }
diff --git a/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp b/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp
index cec10ccf38..ad655217ad 100644
--- a/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp
+++ b/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp
@@ -986,6 +986,7 @@ Q_DECLARE_METATYPE(QVariant)
 void tst_QJSValue::toVariant()
 {
     QJSEngine eng;
+    QObject temp;
 
     QJSValue undefined = eng.toScriptValue(QVariant());
     QCOMPARE(undefined.toVariant(), QVariant());
@@ -1020,11 +1021,11 @@ void tst_QJSValue::toVariant()
     QJSValue object = eng.newObject();
     QCOMPARE(object.toVariant(), QVariant(QVariantMap()));
 
-    QJSValue qobject = eng.newQObject(this);
+    QJSValue qobject = eng.newQObject(&temp);
     {
         QVariant var = qobject.toVariant();
         QCOMPARE(var.userType(), int(QMetaType::QObjectStar));
-        QCOMPARE(qVariantValue<QObject*>(var), (QObject *)this);
+        QCOMPARE(qVariantValue<QObject*>(var), (QObject *)&temp);
     }
 
     {
@@ -1130,10 +1131,11 @@ Q_DECLARE_METATYPE(QPushButton*);
 void tst_QJSValue::toQObject()
 {
     QJSEngine eng;
+    QObject temp;
 
-    QJSValue qobject = eng.newQObject(this);
-    QCOMPARE(qobject.toQObject(), (QObject *)this);
-    QCOMPARE(qjsvalue_cast<QObject*>(qobject), (QObject *)this);
+    QJSValue qobject = eng.newQObject(&temp);
+    QCOMPARE(qobject.toQObject(), (QObject *)&temp);
+    QCOMPARE(qjsvalue_cast<QObject*>(qobject), (QObject *)&temp);
     QCOMPARE(qjsvalue_cast<QWidget*>(qobject), (QWidget *)0);
 
     QWidget widget;
@@ -2168,6 +2170,7 @@ void tst_QJSValue::getSetData_objects_data()
 {
 #if 0 // FIXME: no setData/data API
     newEngine();
+    QObject *temp = new QObject;
 
     QTest::addColumn<QJSValue>("object");
 
@@ -2175,7 +2178,7 @@ void tst_QJSValue::getSetData_objects_data()
     QTest::newRow("object from engine") << engine->newObject();
     QTest::newRow("Array") << engine->newArray();
     QTest::newRow("Date") << engine->evaluate("new Date(12324)");
-    QTest::newRow("QObject") << engine->newQObject(this);
+    QTest::newRow("QObject") << engine->newQObject(temp);
     QTest::newRow("RegExp") << engine->newRegExp(QRegExp());
 #endif
 }
@@ -2265,6 +2268,7 @@ class TestScriptClass : public QScriptClass
 void tst_QJSValue::getSetScriptClass_emptyClass_data()
 {
     newEngine();
+    QObject *temp = new QObject;
     QTest::addColumn<QJSValue>("value");
 
     QTest::newRow("invalid") << QJSValue();
@@ -2281,7 +2285,7 @@ void tst_QJSValue::getSetScriptClass_emptyClass_data()
     QTest::newRow("undefined") << QJSValue(engine->toScriptValue(QVariant()));
     QTest::newRow("object") << QJSValue(engine->newObject());
     QTest::newRow("date") << QJSValue(engine->evaluate("new Date()"));
-    QTest::newRow("qobject") << QJSValue(engine->newQObject(this));
+    QTest::newRow("qobject") << QJSValue(engine->newQObject(temp));
 }
 
 void tst_QJSValue::getSetScriptClass_emptyClass()
@@ -2341,9 +2345,10 @@ void tst_QJSValue::getSetScriptClass_QVariant()
 void tst_QJSValue::getSetScriptClass_QObject()
 {
     QScriptEngine eng;
+    QObject temp;
     TestScriptClass testClass(&eng);
     {
-        QJSValue obj = eng.newQObject(this);
+        QJSValue obj = eng.newQObject(&temp);
         QVERIFY(obj.isQObject());
         obj.setScriptClass(&testClass);
         QCOMPARE(obj.scriptClass(), (QScriptClass*)&testClass);
@@ -2999,6 +3004,7 @@ void tst_QJSValue::lessThan()
 void tst_QJSValue::equals()
 {
     QJSEngine eng;
+    QObject temp;
 
     QVERIFY(QJSValue().equals(QJSValue()));
 
@@ -3088,8 +3094,8 @@ void tst_QJSValue::equals()
     QCOMPARE(obj1.equals(obj1), true);
     QCOMPARE(obj2.equals(obj2), true);
 
-    QJSValue qobj1 = eng.newQObject(this);
-    QJSValue qobj2 = eng.newQObject(this);
+    QJSValue qobj1 = eng.newQObject(&temp);
+    QJSValue qobj2 = eng.newQObject(&temp);
     QJSValue qobj3 = eng.newQObject(0);
 
     // FIXME: No ScriptOwnership: QJSValue qobj4 = eng.newQObject(new QObject(), QScriptEngine::ScriptOwnership);
@@ -3137,6 +3143,7 @@ void tst_QJSValue::equals()
 void tst_QJSValue::strictlyEquals()
 {
     QJSEngine eng;
+    QObject temp;
 
     QVERIFY(QJSValue().strictlyEquals(QJSValue()));
 
@@ -3242,8 +3249,8 @@ void tst_QJSValue::strictlyEquals()
     QCOMPARE(obj2.strictlyEquals(obj2), true);
     QVERIFY(!obj1.strictlyEquals(QJSValue()));
 
-    QJSValue qobj1 = eng.newQObject(this);
-    QJSValue qobj2 = eng.newQObject(this);
+    QJSValue qobj1 = eng.newQObject(&temp);
+    QJSValue qobj2 = eng.newQObject(&temp);
     QVERIFY(qobj1.strictlyEquals(qobj2));
 
     {
@@ -3482,13 +3489,14 @@ void tst_QJSValue::prettyPrinter()
 void tst_QJSValue::engineDeleted()
 {
     QJSEngine *eng = new QJSEngine;
+    QObject temp;
     QJSValue v1 = eng->toScriptValue(123);
     QVERIFY(v1.isNumber());
     QJSValue v2 = eng->toScriptValue(QString("ciao"));
     QVERIFY(v2.isString());
     QJSValue v3 = eng->newObject();
     QVERIFY(v3.isObject());
-    QJSValue v4 = eng->newQObject(this);
+    QJSValue v4 = eng->newQObject(&temp);
     QVERIFY(v4.isQObject());
     QJSValue v5 = "Hello";
     QVERIFY(v2.isString());