diff --git a/mainwindow.cpp b/mainwindow.cpp
index 1c51128a1..1e095dddf 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -995,7 +995,7 @@ void MainWindow::msgBox(QString t)                             //msgBox
 void MainWindow::on_actionOnline_Users_Guide_triggered()      //Display manual
 {
   QDesktopServices::openUrl(QUrl(
-                                 "http://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-toc2.html",
+                                 "http://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main.html",
                                  QUrl::TolerantMode));
 }