diff --git a/platform/qt/app/mapwindow.hpp b/platform/qt/app/mapwindow.hpp
index 7a7016f2a..06b6fb023 100644
--- a/platform/qt/app/mapwindow.hpp
+++ b/platform/qt/app/mapwindow.hpp
@@ -10,10 +10,14 @@
 
 #include <memory>
 
+QT_BEGIN_NAMESPACE
+
 class QKeyEvent;
 class QMouseEvent;
 class QWheelEvent;
 
+QT_END_NAMESPACE
+
 class MapWindow : public QOpenGLWidget
 {
     Q_OBJECT