1 files changed, 2 insertions, 2 deletions
diff --git a/src/network/socket/qabstractsocketenginereceiver_p.h b/src/network/socket/qabstractsocketenginereceiver_p.h
index d66f0ab01d1..35e88e2df4c 100644
--- a/src/network/socket/qabstractsocketenginereceiver_p.h
+++ b/src/network/socket/qabstractsocketenginereceiver_p.h
@@ -26,9 +26,9 @@ QT_BEGIN_NAMESPACE
 class QAuthenticator;
 class QNetworkProxy;
 
-class QAbstractSocketEngineReceiver {
+class Q_NETWORK_EXPORT QAbstractSocketEngineReceiver {
 public:
-    virtual ~QAbstractSocketEngineReceiver(){}
+    virtual ~QAbstractSocketEngineReceiver() = 0; // impl. in qabstractsocketengine.cpp
     virtual void readNotification()= 0;
     virtual void writeNotification()= 0;
     virtual void closeNotification()= 0;