diff --git a/Images/valid-html401-blue.png b/Images/valid-html401-blue.png
new file mode 100644
index 0000000..dd20e49
Binary files /dev/null and b/Images/valid-html401-blue.png differ
diff --git a/SecurityPolicy.html b/SecurityPolicy.html
index be0fe68..5c7a5d8 100644
--- a/SecurityPolicy.html
+++ b/SecurityPolicy.html
@@ -161,6 +161,6 @@ Each procedure must be referenced explicitly in the Security Manual.
 
 <h2><a name="end">End</a></h2>
 <p>This is the end of the Security Policy.</p>
-<p><a href="http://validator.w3.org/check?uri=referer"><img src="Images/valid-xhtml11-blue" id="graphics2" alt="Valid XHTML 1.1" align="bottom" border="0" height="33" width="90"></a>
+<p><a href="http://validator.w3.org/check?uri=referer"><img src="Images/valid-html401-blue.png" id="graphics2" alt="Valid HTML 4.01" align="bottom" border="0" height="33" width="90"></a>
 </p>
 </body></html>