diff --git a/en_US.ISO8859-1/books/handbook/config/chapter.xml b/en_US.ISO8859-1/books/handbook/config/chapter.xml
index 8272b5c31f..10e8290ba0 100644
--- a/en_US.ISO8859-1/books/handbook/config/chapter.xml
+++ b/en_US.ISO8859-1/books/handbook/config/chapter.xml
@@ -2768,7 +2768,7 @@ kern.maxvnodes: 100000</screen>
 	a custom kernel.</para>
 
       <example xml:id="swapfile-10-and-later">
-	<title>Creating a Swap File on &os; 10.<replaceable>X</replaceable> and Later</title>
+	<title>Creating a Swap File on &os;&nbsp;10.<replaceable>X</replaceable> and Later</title>
 
 	<procedure>
 	  <step>
@@ -2804,7 +2804,7 @@ kern.maxvnodes: 100000</screen>
       </example>
 
       <example xml:id="swapfile-9-and-earlier">
-	<title>Creating a Swap File on &os; 9.<replaceable>X</replaceable> and Earlier</title>
+	<title>Creating a Swap File on &os;&nbsp;9.<replaceable>X</replaceable> and Earlier</title>
 
 	<procedure>
 	  <step>