diff --git a/src/plugins/platformthemes/gtk3/qgtk3interface_p.h b/src/plugins/platformthemes/gtk3/qgtk3interface_p.h
index c43932a4fa3..adeb703ec56 100644
--- a/src/plugins/platformthemes/gtk3/qgtk3interface_p.h
+++ b/src/plugins/platformthemes/gtk3/qgtk3interface_p.h
@@ -53,6 +53,7 @@ class QGtk3Storage;
 class QGtk3Interface
 {
     Q_GADGET
+    Q_DISABLE_COPY_MOVE(QGtk3Interface)
 public:
     QGtk3Interface(QGtk3Storage *);
     ~QGtk3Interface();