diff --git a/docs/manual/mod/mod_cache.xml b/docs/manual/mod/mod_cache.xml
index b69310b9b3..5b86a75493 100644
--- a/docs/manual/mod/mod_cache.xml
+++ b/docs/manual/mod/mod_cache.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
 <?xml-stylesheet type="text/xsl" href="../style/manual.en.xsl"?>
-<!-- $Revision: 1.18 $ -->
+<!-- $Revision: 1.19 $ -->
 
 <!--
  Copyright 2002-2004 The Apache Software Foundation
@@ -96,6 +96,8 @@
       &lt;IfModule mod_cache.c&gt;<br />
       <indent>
         #LoadModule disk_cache_module modules/mod_disk_cache.so<br />
+        # If you want to use mod_disk_cache instead of mod_mem_cache,
+        # uncomment the line above and comment out the LoadModule line below.
         &lt;IfModule mod_disk_cache.c&gt;<br />
         <indent>
           CacheRoot c:/cacheroot<br />