diff --git a/src/corelib/global/qoverload.h b/src/corelib/global/qoverload.h
index f28b502c4f..4be6fc5e7d 100644
--- a/src/corelib/global/qoverload.h
+++ b/src/corelib/global/qoverload.h
@@ -4,11 +4,15 @@
 #ifndef QOVERLOAD_H
 #define QOVERLOAD_H
 
+#include <QtCore/qtnamespacemacros.h>
+
 #if 0
 #pragma qt_class(QOverload)
 #pragma qt_sync_stop_processing
 #endif
 
+QT_BEGIN_NAMESPACE
+
 #ifdef Q_QDOC
 // Just for documentation generation
 template<typename T>
@@ -72,4 +76,6 @@ template <typename... Args> constexpr inline QNonConstOverload<Args...> qNonCons
 #define QT_OVERLOADED_MACRO_IMP(MACRO, ARGC) QT_OVERLOADED_MACRO_EXPAND(MACRO, ARGC)
 #define QT_OVERLOADED_MACRO(MACRO, ...) QT_VA_ARGS_EXPAND(QT_OVERLOADED_MACRO_IMP(MACRO, QT_VA_ARGS_COUNT(__VA_ARGS__))(__VA_ARGS__))
 
+QT_END_NAMESPACE
+
 #endif /* QOVERLOAD_H */