diff --git a/Web/details.wml b/Web/details.wml
index 93a79f9..8706922 100644
--- a/Web/details.wml
+++ b/Web/details.wml
@@ -12,7 +12,7 @@ anyway, the administrator is always free to close it (I think they
 shouldn't). echoping has therefore less chance to succeed than ping or
 bing. (On a typical Unix box, "echo" service is configured in
 /etc/inetd.conf but see the <A
-HREF="http://www.cert.org/advisories/CA-96.01.UDP_service_denial.html">CERT
+HREF="http://www.cert.org/advisories/CA-1996-01.html">CERT
 advisory</A>.)
 
 <H2>What does it measure?</H2>