diff --git a/src/corelib/serialization/qxmlstream_p.h b/src/corelib/serialization/qxmlstream_p.h
index 2194fd1143..8713b322d4 100644
--- a/src/corelib/serialization/qxmlstream_p.h
+++ b/src/corelib/serialization/qxmlstream_p.h
@@ -127,6 +127,8 @@ using namespace QtPrivate;
 
 template <typename T> class QXmlStreamSimpleStack
 {
+    Q_DISABLE_COPY_MOVE(QXmlStreamSimpleStack)
+
     T *data;
     qsizetype tos, cap;
 public: