diff --git a/en_US.ISO8859-1/books/handbook/preface/preface.sgml b/en_US.ISO8859-1/books/handbook/preface/preface.sgml
index 336917e0df..47464ccdae 100644
--- a/en_US.ISO8859-1/books/handbook/preface/preface.sgml
+++ b/en_US.ISO8859-1/books/handbook/preface/preface.sgml
@@ -428,7 +428,7 @@
       </listitem>
     </varlistentry>
     <varlistentry>
-      <term><emphasis><xref linkend="dtrace">, Dtrace</emphasis></term>
+      <term><emphasis><xref linkend="dtrace">, DTrace</emphasis></term>
       <listitem>
 	<para>Describes how to configure and use the DTrace tool from &sun;
 	  in &os;.  Dynamic tracing can help locate performance issues, by