diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 8efef91fed..063ce52a44 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -11292,6 +11292,13 @@ Reference: <http://www.freebsd.org/ports/portaudit/74a9541d-5d6c-11d8-80e3-00
 		    <entry>6.2-STABLE after libutil(3) MFC's.</entry>
 		    <entry>602112</entry>
 		  </row>
+		  <row>
+		    <entry>6.2-STABLE after MFC of wide and single byte
+		      ctype separation.  Newly compiled binary that references
+		      to ctype.h may require a new symbol, __mb_sb_limit,
+		      which is not available on older systems.</entry>
+		    <entry>602113</entry>
+		  </row>
 		  <row>
 		    <entry>7.0-CURRENT.</entry>
 		    <entry>700000</entry>