diff --git a/reference/session/ini.xml b/reference/session/ini.xml
index 0f083ccf59..c883525184 100644
--- a/reference/session/ini.xml
+++ b/reference/session/ini.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.19 $ -->
+<!-- $Revision: 1.20 $ -->
 <section id="session.configuration">
  &reftitle.runtime;
  &extension.runtime;
@@ -310,10 +310,12 @@
     </simpara>
     <note>
      <simpara>If you are using the default file-based session handler, your
-     filesystem must keep track of access times (atime).  Windows FAT does
+     filesystem must keep track of access times (atime). Windows FAT does
      not so you will have to come up with another way to handle garbage
      collecting your session if you are stuck with a FAT filesystem or any
      other fs where atime tracking is not available.
+     Since PHP 4.2.3 it's used mtime (modified date) instead of atime. So, you
+     won't have problems with filesystems where atime tracking is not available.
      </simpara>
     </note>
    </listitem>