diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index 80c1f21c0d..57a622ebe5 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -1727,6 +1727,7 @@ typedef QMap<QString, QVariant> QVariantMap;
 typedef QHash<QString, QVariant> QVariantHash;
 
 #define Q_DECLARE_METATYPE_TEMPLATE_1ARG(SINGLE_ARG_TEMPLATE) \
+QT_BEGIN_NAMESPACE \
 template <typename T> \
 struct QMetaTypeId< SINGLE_ARG_TEMPLATE<T> > \
 { \
@@ -1754,9 +1755,11 @@ struct QMetaTypeId< SINGLE_ARG_TEMPLATE<T> > \
         metatype_id.storeRelease(newId); \
         return newId; \
     } \
-};
+}; \
+QT_END_NAMESPACE
 
 #define Q_DECLARE_METATYPE_TEMPLATE_2ARG(DOUBLE_ARG_TEMPLATE) \
+QT_BEGIN_NAMESPACE \
 template<typename T, typename U> \
 struct QMetaTypeId< DOUBLE_ARG_TEMPLATE<T, U> > \
 { \
@@ -1787,7 +1790,8 @@ struct QMetaTypeId< DOUBLE_ARG_TEMPLATE<T, U> > \
         metatype_id.storeRelease(newId); \
         return newId; \
     } \
-};
+}; \
+QT_END_NAMESPACE
 
 namespace QtPrivate {
 
@@ -1838,7 +1842,7 @@ struct QMetaTypeId< SMART_POINTER<T> > \
                                                 QtPrivate::IsPointerToTypeDerivedFromQObject<T*>::Value> \
 { \
 };\
-QT_END_NAMESPACE \
+QT_END_NAMESPACE
 
 #define QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(F) \
     F(QSharedPointer) \
@@ -1846,9 +1850,13 @@ QT_END_NAMESPACE \
     F(QPointer)
 
 #define Q_DECLARE_METATYPE_TEMPLATE_1ARG_ITER(TEMPLATENAME) \
+    QT_BEGIN_NAMESPACE \
     template <class T> class TEMPLATENAME; \
+    QT_END_NAMESPACE \
     Q_DECLARE_METATYPE_TEMPLATE_1ARG(TEMPLATENAME)
 
+QT_END_NAMESPACE
+
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_METATYPE_TEMPLATE_1ARG_ITER)
 
 #undef Q_DECLARE_METATYPE_TEMPLATE_1ARG_ITER
@@ -1857,7 +1865,9 @@ Q_DECLARE_METATYPE_TEMPLATE_1ARG(std::vector)
 Q_DECLARE_METATYPE_TEMPLATE_1ARG(std::list)
 
 #define Q_DECLARE_METATYPE_TEMPLATE_2ARG_ITER(TEMPLATENAME, CPPTYPE) \
+    QT_BEGIN_NAMESPACE \
     template <class T1, class T2> CPPTYPE TEMPLATENAME; \
+    QT_END_NAMESPACE \
     Q_DECLARE_METATYPE_TEMPLATE_2ARG(TEMPLATENAME)
 
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
@@ -1870,7 +1880,6 @@ Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::map)
 #define Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER(TEMPLATENAME) \
     Q_DECLARE_SMART_POINTER_METATYPE(TEMPLATENAME)
 
-QT_END_NAMESPACE
 
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 
diff --git a/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp b/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp
index 0b50bc7576..eab2ba4f36 100644
--- a/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp
+++ b/tests/auto/corelib/kernel/qvariant/tst_qvariant.cpp
@@ -2275,10 +2275,26 @@ public:
     T* operator->() const { return pointer; }
 };
 
+template<typename T>
+struct SequentialContainer
+{
+  T t;
+};
+
+template<typename T, typename U>
+struct AssociativeContainer
+{
+  T t;
+  U u;
+};
+
 }
 
 Q_DECLARE_SMART_POINTER_METATYPE(MyNS::SmartPointer)
 
+Q_DECLARE_METATYPE_TEMPLATE_1ARG(MyNS::SequentialContainer)
+Q_DECLARE_METATYPE_TEMPLATE_2ARG(MyNS::AssociativeContainer)
+
 Q_DECLARE_METATYPE(MyNS::SmartPointer<int>)
 
 void tst_QVariant::qvariant_cast_QObject_wrapper()
@@ -2292,6 +2308,15 @@ void tst_QVariant::qvariant_cast_QObject_wrapper()
     v.convert(qMetaTypeId<QObject*>());
     QCOMPARE(v.value<QObject*>(), object);
 
+    MyNS::SequentialContainer<int> sc;
+    sc.t = 47;
+    MyNS::AssociativeContainer<int, short> ac;
+    ac.t = 42;
+    ac.u = 5;
+
+    QVariant::fromValue(sc);
+    QVariant::fromValue(ac);
+
     // Compile tests:
     qRegisterMetaType<MyNS::SmartPointer<int> >();
     // Not declared as a metatype: