diff --git a/usr.bin/make/make.1 b/usr.bin/make/make.1
index d3db2d4d6103..4323a2aaa811 100644
--- a/usr.bin/make/make.1
+++ b/usr.bin/make/make.1
@@ -1,4 +1,4 @@
-.\"	$NetBSD: make.1,v 1.123 2006/03/11 12:02:20 wiz Exp $
+.\"	$NetBSD: make.1,v 1.124 2006/03/19 01:53:01 sjg Exp $
 .\"
 .\" Copyright (c) 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"	from: @(#)make.1	8.4 (Berkeley) 3/19/94
 .\"
-.Dd February 26, 2006
+.Dd March 18, 2006
 .Dt MAKE 1
 .Os
 .Sh NAME
@@ -417,6 +417,10 @@ Assign the value to the variable if it is not already defined.
 Assign with expansion, i.e. expand the value before assigning it
 to the variable.
 Normally, expansion is not done until the variable is referenced.
+.Em NOTE :
+References to undefined variables are
+.Em not
+expanded.  This can cause problems when variable modifiers are used.
 .It Ic \&!=
 Expand the value and pass it to the shell for execution and assign
 the result to the variable.