diff --git a/sbin/ip6fw/ip6fw.8 b/sbin/ip6fw/ip6fw.8
index 7a90ca94834..a3c85dda1a0 100644
--- a/sbin/ip6fw/ip6fw.8
+++ b/sbin/ip6fw/ip6fw.8
@@ -475,4 +475,4 @@ API based upon code written by Daniel Boulet for BSDI.
 .Sh HISTORY
 .Nm
 first appeared in
-.Fx 2.0 .
+.Fx 4.0 .