diff --git a/lib/GUI.pm b/lib/GUI.pm
index 97630fb..6610a45 100644
--- a/lib/GUI.pm
+++ b/lib/GUI.pm
@@ -2577,6 +2577,7 @@ sub about {
    $aboutdialog = Gtk2::AboutDialog->new();
    $aboutdialog->set_program_name("TinyCA2");
    $aboutdialog->set_version($main->{'version'});
+   $aboutdialog->set_comments("using OpenSSL version " . $main->{'OpenSSL'}->get_version());
    $aboutdialog->set_copyright("2002-2006 Stephan Martin");
    $aboutdialog->set_license("GNU Public License (GPL)");
    $aboutdialog->set_website("https://www.hoogi.de/tinyca/");