diff --git a/src/network/access/qftp.cpp b/src/network/access/qftp.cpp
index bb89eece4b9..a83d56f31f4 100644
--- a/src/network/access/qftp.cpp
+++ b/src/network/access/qftp.cpp
@@ -736,7 +736,10 @@ void QFtpDTP::socketConnectionClosed()
         clearData();
     }
 
-    bytesFromSocket = socket->readAll();
+    if (socket->isOpen())
+        bytesFromSocket = socket->readAll();
+    else
+        bytesFromSocket.clear();
 #if defined(QFTPDTP_DEBUG)
     qDebug("QFtpDTP::connectState(CsClosed)");
 #endif