diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 55ef5b7ebe..f6e9e25a52 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -1932,6 +1932,12 @@ PORTEPOCH=      1</programlisting>
 		<entry></entry>
 	      </row>
 
+	      <row>
+		<entry><filename>x11-drivers</filename></entry>
+		<entry>X11 drivers.</entry>
+		<entry>/entry>
+	      </row>
+
 	      <row>
 		<entry><filename>x11-fm</filename></entry>
 		<entry>X11 file managers.</entry>