diff --git a/src/network/access/qnetworkrequestfactory.h b/src/network/access/qnetworkrequestfactory.h
index c170b75c8e..9d955a51e7 100644
--- a/src/network/access/qnetworkrequestfactory.h
+++ b/src/network/access/qnetworkrequestfactory.h
@@ -25,7 +25,7 @@ class QSslConfiguration;
 class QNetworkRequestFactoryPrivate;
 QT_DECLARE_QESDP_SPECIALIZATION_DTOR_WITH_EXPORT(QNetworkRequestFactoryPrivate, Q_NETWORK_EXPORT)
 
-class QNetworkRequestFactory
+class QT_TECH_PREVIEW_API QNetworkRequestFactory
 {
 public:
     Q_NETWORK_EXPORT QNetworkRequestFactory();