diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index 357fc6cf7f6..7390a9c8bce 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -214,7 +214,7 @@ class QDebugStateSaverPrivate;
 class QDebugStateSaver
 {
 public:
-    Q_CORE_EXPORT
+    Q_NODISCARD_CTOR Q_CORE_EXPORT
     QDebugStateSaver(QDebug &dbg);
     Q_CORE_EXPORT
     ~QDebugStateSaver();