diff --git a/src/plugins/qmldesigner/core/include/nodeinstanceview.h b/src/plugins/qmldesigner/core/include/nodeinstanceview.h
index 402643d3aa9..67851008991 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 896fa3d210e..2a3b7926479 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 {