diff --git a/ChangeLog b/ChangeLog
index 0462d7f9..6f09795b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-05-18  Nicolas François  <nicolas.francois@centraliens.net>
+
+	* man/userdel.8.xml: Document tat -f may force teh deletion of a
+	busy user.
+
 2009-05-18  Nicolas François  <nicolas.francois@centraliens.net>
 
 	* NEWS, src/usermod.c: Check if the user is busy when the user's
diff --git a/man/userdel.8.xml b/man/userdel.8.xml
index fc272ac4..5c321955 100644
--- a/man/userdel.8.xml
+++ b/man/userdel.8.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
    Copyright (c) 1991 - 1994, Julianne Frances Haugh
-   Copyright (c) 2007 - 2008, Nicolas François
+   Copyright (c) 2007 - 2009, Nicolas François
    All rights reserved.
   
    Redistribution and use in source and binary forms, with or without
@@ -221,8 +221,10 @@
     <title>CAVEATS</title>
     <para>
       <command>userdel</command> will not allow you to remove an account if
-      the user is currently logged in. You must kill any running processes
-      which belong to an account that you are deleting.
+      there are running processes which belong to this account. In that
+      case, you may have to kill those processes or lock the user's
+      password or account and remove the account later. The
+      <option>-f</option> option can force the deletion of this account.
     </para>
     <para>You may not remove any NIS attributes on a NIS client. This must
       be performed on the NIS server.