diff --git a/widgets/mainwindow.cpp b/widgets/mainwindow.cpp
index 5ccdf9812..f1b5c65db 100644
--- a/widgets/mainwindow.cpp
+++ b/widgets/mainwindow.cpp
@@ -9763,7 +9763,11 @@ void MainWindow::write_all(QString txRx, QString message)
     auto time = QDateTime::currentDateTimeUtc ();
     if( txRx=="Rx" && !m_bFastMode ) time=m_dateTimeSeqStart;
 
-    t = t.asprintf("%10.3f ",m_freqNominalPeriod/1.e6);   // prevent writing of wrong frequencies
+    if ("WSPR" != m_mode) {
+      t = t.asprintf("%10.3f ",m_freqNominalPeriod/1.e6);   // prevent writing of wrong frequencies
+    } else {
+      t = t.asprintf("%10.3f ",m_freqNominal/1.e6);
+    }
     if (m_diskData) {
       if (m_fileDateTime.size()==11) {
         line=m_fileDateTime + "  " + t + txRx + " " + mode_string + msg;