diff --git a/src/corelib/io/qiodevice_p.h b/src/corelib/io/qiodevice_p.h
index e9a8af0855..6b647f8dd9 100644
--- a/src/corelib/io/qiodevice_p.h
+++ b/src/corelib/io/qiodevice_p.h
@@ -75,6 +75,7 @@ class Q_CORE_EXPORT QIODevicePrivate
 #endif
 {
     Q_DECLARE_PUBLIC(QIODevice)
+    Q_DISABLE_COPY_MOVE(QIODevicePrivate)
 
 public:
     QIODevicePrivate();