diff --git a/src/plugins/qmldesigner/core/include/nodeinstanceview.h b/src/plugins/qmldesigner/core/include/nodeinstanceview.h
index 402643d3aa947f50456a53d4a7f5dae851016a26..67851008991645271b094f0693b56afcc7f9b962 100644
--- a/src/plugins/qmldesigner/core/include/nodeinstanceview.h
+++ b/src/plugins/qmldesigner/core/include/nodeinstanceview.h
@@ -39,9 +39,11 @@
 #include <QHash>
 #include <QWeakPointer>
 
+QT_BEGIN_NAMESPACE
 class QDeclarativeEngine;
 class QGraphicsView;
 class QFileSystemWatcher;
+QT_END_NAMESPACE
 
 
 namespace QmlDesigner {
diff --git a/src/plugins/qmldesigner/core/instances/qmlpropertychangesnodeinstance.h b/src/plugins/qmldesigner/core/instances/qmlpropertychangesnodeinstance.h
index 896fa3d210e729a6efa9b35942520260ede42d89..2a3b7926479059b324d9068adf9189c90b459bd0 100644
--- a/src/plugins/qmldesigner/core/instances/qmlpropertychangesnodeinstance.h
+++ b/src/plugins/qmldesigner/core/instances/qmlpropertychangesnodeinstance.h
@@ -36,7 +36,9 @@
 #include <QPair>
 #include <QWeakPointer>
 
+QT_BEGIN_NAMESPACE
 class QDeclarativeProperty;
+QT_END_NAMESPACE
 
 namespace QmlDesigner {