diff --git a/en_US.ISO8859-1/books/handbook/serialcomms/chapter.xml b/en_US.ISO8859-1/books/handbook/serialcomms/chapter.xml
index 46f5c7c33d..cc76b4c769 100644
--- a/en_US.ISO8859-1/books/handbook/serialcomms/chapter.xml
+++ b/en_US.ISO8859-1/books/handbook/serialcomms/chapter.xml
@@ -525,9 +525,9 @@
 	<listitem>
 	  <para>Call-out ports are named
 	    <filename>/dev/cuau<replaceable>N</replaceable></filename>
-	    on &os; versions 10.x and higher and
+	    on &os; versions 8.X and higher and
 	    <filename>/dev/cuad<replaceable>N</replaceable></filename>
-	    on &os; versions 9.x and lower.  Call-out ports are
+	    on &os; versions 7.X and lower.  Call-out ports are
 	    usually not used for terminals, but are used for modems.
 	    The call-out port can be used if the serial cable or the
 	    terminal does not support the <quote>Data Carrier