diff --git a/widgets/mainwindow.cpp b/widgets/mainwindow.cpp
index 83830fb40..47b2e3bb6 100644
--- a/widgets/mainwindow.cpp
+++ b/widgets/mainwindow.cpp
@@ -5051,6 +5051,7 @@ void MainWindow::TxAgain()
 
 void MainWindow::clearDX ()
 {
+  set_dateTimeQSO (-1);
   if (m_QSOProgress != CALLING)
     {
       auto_tx_mode (false);