diff --git a/map65/mainwindow.cpp b/map65/mainwindow.cpp
index 2a32bc239..b7da9cbc4 100644
--- a/map65/mainwindow.cpp
+++ b/map65/mainwindow.cpp
@@ -630,8 +630,9 @@ void MainWindow::dataSink(int k)
     ntrz=ntr;
     n=0;
   }
-//if(ihsym == 280) {   //For JT65, decode at t=52 s
-  if(ihsym == 302) {   //For Q65, decode at t=56 s
+
+  if(ihsym == 280) {   //For JT65, decode at t=52 s (also for old *.tf2/*.iq disk files)
+  //if(ihsym == 302) {   //For Q65, decode at t=56 s
     datcom_.newdat=1;
     datcom_.nagain=0;
     QDateTime t = QDateTime::currentDateTimeUtc();