diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 171de7c8ab..f50b817c63 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -6185,8 +6185,8 @@ USE_SDL+=   mixer
       <title>Using wxWidgets</title>
 
       <para>If your port uses <application>wxWidgets</application>
-	cross-platform toolkit, define <literal>USE_WX=yes</literal>.
-	A specific version can be requested by setting
+	cross-platform toolkit, define <literal>USE_WX</literal>.
+	A specific version must be requested by setting
 	<literal>USE_WX=2.6</literal>.  Ranges (<literal>2.4-2.6</literal>)
 	and partial ranges (<literal>-2.4</literal>, <literal>2.6+</literal>)
 	are also possible.</para>
@@ -6248,8 +6248,8 @@ USE_SDL+=   mixer
 	are <literal>absolute</literal> resulting in
 	<literal>--with-wx-config=${WX_CONFIG}</literal>, and
 	<literal>relative</literal> resulting in
-	<literal>--with-wx=${X11BASE}</literal> being added to configure
-	script arguments.</para>
+	<literal>--with-wx=${X11BASE} --with-wx-config=${WX_CONFIG}</literal>
+	being added to configure script arguments.</para>
 
       <para>Define <literal>WX_UNICODE=yes</literal> if your port needs
 	the Unicode version of the wxWidgets libraries.</para>