diff --git a/src/corelib/thread/qthreadstorage.h b/src/corelib/thread/qthreadstorage.h
index b30e91c6c7..a7e93f03a5 100644
--- a/src/corelib/thread/qthreadstorage.h
+++ b/src/corelib/thread/qthreadstorage.h
@@ -158,6 +158,8 @@ QT_END_NAMESPACE
 
 #include <type_traits>
 
+QT_BEGIN_NAMESPACE
+
 template <typename T, typename U>
 inline bool qThreadStorage_hasLocalData(const QScopedPointer<T, U> &data)
 {
@@ -227,6 +229,8 @@ public:
     }
 };
 
+QT_END_NAMESPACE
+
 #endif // QT_CONFIG(thread)
 
 #endif // QTHREADSTORAGE_H