diff --git a/map65/about.cpp b/map65/about.cpp
index 79b03168a..9428a6fe0 100644
--- a/map65/about.cpp
+++ b/map65/about.cpp
@@ -8,7 +8,7 @@ CAboutDlg::CAboutDlg(QWidget *parent, QString Revision) :
 {
   ui->setupUi(this);
   ui->labelTxt->clear();
-  m_Str  = "<html><h2>" + m_Revision + "</h2>\n\n";
+  m_Str  = "<html><h4>" + m_Revision + "</h4>\n\n";
   m_Str += "MAP65 implements a wideband polarization-matching receiver <br>";
   m_Str += "for the JT65 protocol, with a matching transmitting facility. <br>";
   m_Str += "It is primarily intended for amateur radio EME communication. <br><br>";
