diff --git a/src/plugins/platforms/wayland/shared/qwaylandmimehelper.cpp b/src/plugins/platforms/wayland/shared/qwaylandmimehelper.cpp
index ccc48ef2c21..d7e51144026 100644
--- a/src/plugins/platforms/wayland/shared/qwaylandmimehelper.cpp
+++ b/src/plugins/platforms/wayland/shared/qwaylandmimehelper.cpp
@@ -46,6 +46,8 @@
 #include <QBuffer>
 #include <QImageWriter>
 
+QT_USE_NAMESPACE
+
 QByteArray QWaylandMimeHelper::getByteArray(QMimeData *mimeData, const QString &mimeType)
 {
     QByteArray content;
diff --git a/src/plugins/platforms/wayland/shared/qwaylandmimehelper.h b/src/plugins/platforms/wayland/shared/qwaylandmimehelper.h
index f31685cd6f5..539fc3adc80 100644
--- a/src/plugins/platforms/wayland/shared/qwaylandmimehelper.h
+++ b/src/plugins/platforms/wayland/shared/qwaylandmimehelper.h
@@ -46,10 +46,14 @@
 #include <QByteArray>
 #include <QMimeData>
 
+QT_BEGIN_NAMESPACE
+
 class QWaylandMimeHelper
 {
 public:
     static QByteArray getByteArray(QMimeData *mimeData, const QString &mimeType);
 };
 
+QT_END_NAMESPACE
+
 #endif