diff --git a/src/FrameworkWidgetFactory.h b/src/FrameworkWidgetFactory.h
index 5ddd6e7e..e0c4a127 100644
--- a/src/FrameworkWidgetFactory.h
+++ b/src/FrameworkWidgetFactory.h
@@ -23,7 +23,9 @@
  * @author Sérgio Martins \<sergio.martins@kdab.com\>
  */
 
+QT_BEGIN_NAMESPACE
 class QAbstractButton;
+QT_END_NAMESPACE
 
 namespace Layouting {
 class Separator;