diff --git a/src/network/socket/qlocalsocket_win.cpp b/src/network/socket/qlocalsocket_win.cpp
index 019829cc9c..b98dcb0dbc 100644
--- a/src/network/socket/qlocalsocket_win.cpp
+++ b/src/network/socket/qlocalsocket_win.cpp
@@ -582,7 +582,7 @@ bool QLocalSocket::waitForBytesWritten(int msecs)
         if (d->pipeWriter->checkForWrite())
             return true;
 
-        if (poller.waitForClose)
+        if (poller.waitForClose && isValid())
             d->pipeReader->checkPipeState();
 
         d->pipeReader->checkForReadyRead();