diff --git a/share/man/man4/ltc430x.4 b/share/man/man4/ltc430x.4
index eec672e354c..0287c1260d4 100644
--- a/share/man/man4/ltc430x.4
+++ b/share/man/man4/ltc430x.4
@@ -26,7 +26,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 1, 2020
+.Dd September 1, 2020
 .Dt LTC430X 4
 .Os
 .Sh NAME
@@ -97,6 +97,10 @@ The upstream
 the
 .Nm
 instance is attached to.
+.It Va hint.ltc430x.<unit>.addr
+The slave address of the
+.Nm
+instance on the upstream bus.
 .El
 .Pp
 When configured via hints, the driver automatically adds an iicbus