diff --git a/reference/session/constants.xml b/reference/session/constants.xml
index ab4c73bc7e..41de517ae6 100644
--- a/reference/session/constants.xml
+++ b/reference/session/constants.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.1 $ -->
+<!-- $Revision: 1.2 $ -->
 <section id="session.constants">
  &reftitle.constants;
  &extension.constants;
@@ -7,7 +7,7 @@
   <varlistentry>
    <term>
     <constant>SID</constant> 
-    (<link linkend="language.types.integer">integer</link>)
+    (<link linkend="language.types.string">string</link>)
    </term>
    <listitem>
     <simpara>