diff --git a/reference/session/reference.xml b/reference/session/reference.xml
index bcfc1550f6..1944c1131e 100644
--- a/reference/session/reference.xml
+++ b/reference/session/reference.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.24 $ -->
+<!-- $Revision: 1.25 $ -->
  <reference id="ref.session">
   <title>Session handling functions</title>
   <titleabbrev>Sessions</titleabbrev>
@@ -99,7 +99,7 @@
      <para>
       Optionally you can use shared memory allocation (mm), developed by
       Ralf S. Engelschall, for session storage. You have to download
-      <ulink url="url.mm;">mm</ulink> and install it. This option is not
+      <ulink url="&url.mm;">mm</ulink> and install it. This option is not
       available for Windows platforms.
      </para>
     </note>