diff --git a/sbin/dhclient/dhcp-options.5 b/sbin/dhclient/dhcp-options.5
index 35b47e609c0..37356062cca 100644
--- a/sbin/dhclient/dhcp-options.5
+++ b/sbin/dhclient/dhcp-options.5
@@ -425,7 +425,7 @@ Servers should be listed in order of preference.
 .Ic option ntp-servers Ar ip-address
 .Oo , Ar ip-address ... Oc ;
 .Xc
-This option specifies a list of IP addresses indicating NTP (RFC 1035)
+This option specifies a list of IP addresses indicating NTP (RFC 1305)
 servers available to the client.
 Servers should be listed in order of preference.
 .It Xo