diff --git a/lib/krb5/kerberos.8 b/lib/krb5/kerberos.8
index 68e8e2ba5..36e9f57e3 100644
--- a/lib/krb5/kerberos.8
+++ b/lib/krb5/kerberos.8
@@ -95,7 +95,7 @@ The problems with version 4 are that it has many limitations, the code
 was not too well written (since it had been developed over a long
 time), and it has a number of known security problems. To resolve many
 of these issues work on version five started, and resulted in IETF RFC
-1510 in 1993. IETF RFC 1510 was updated in 2005 with IETF RFC 4120,
+1510 in 1993. IETF RFC 1510 was obsoleted in 2005 with IETF RFC 4120,
 also known as Kerberos clarifications. With the arrival of IETF RFC
 4120, the work on adding extensibility and internationalization have
 started (Kerberos extensions), and a new RFC will hopefully appear