diff --git a/reference/session/functions/session-name.xml b/reference/session/functions/session-name.xml
index c479cd8a40..280e51209f 100644
--- a/reference/session/functions/session-name.xml
+++ b/reference/session/functions/session-name.xml
@@ -35,7 +35,8 @@
      <term><parameter>name</parameter></term>
      <listitem>
       <para>
-       The session name references the session id in cookies and URLs. It
+       The session name references the name of the session, which is 
+       used in cookies and URLs (e.g. <literal>PHPSESSID</literal>). It
        should contain only alphanumeric characters; it should be short and
        descriptive (i.e. for users with enabled cookie warnings).
        If <parameter>name</parameter> is specified, the name of the current