diff --git a/ChangeLog b/ChangeLog
index 34d02d40..32ddf0b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-06  Nicolas François  <nicolas.francois@centraliens.net>
+
+	* man/passwd.5.xml, man/shadow.5.xml: Document the passwd- and
+	shadow- files.
+
 2009-06-06  Nicolas François  <nicolas.francois@centraliens.net>
 
 	* NEWS, src/su.c: Preserve the DISPLAY and XAUTHORITY environment
diff --git a/man/passwd.5.xml b/man/passwd.5.xml
index 77e4e2d4..c17f9d8c 100644
--- a/man/passwd.5.xml
+++ b/man/passwd.5.xml
@@ -127,6 +127,16 @@
 	  <para>optional encrypted password file</para>
 	</listitem>
       </varlistentry>
+      <varlistentry>
+	<term><filename>/etc/passwd-</filename></term>
+	<listitem>
+	  <para>Backup file for /etc/passwd.</para>
+	  <para>
+	    Note that this file is used by the tools of the shadow
+	    toolsuite, but not by all user and password management tools.
+	  </para>
+	</listitem>
+      </varlistentry>
     </variablelist>
   </refsect1>
 
diff --git a/man/shadow.5.xml b/man/shadow.5.xml
index a440c67c..f30646a3 100644
--- a/man/shadow.5.xml
+++ b/man/shadow.5.xml
@@ -241,6 +241,16 @@
 	  <para>Secure user account information.</para>
 	</listitem>
       </varlistentry>
+      <varlistentry>
+	<term><filename>/etc/shadow-</filename></term>
+	<listitem>
+	  <para>Backup file for /etc/shadow.</para>
+	  <para>
+	    Note that this file is used by the tools of the shadow
+	    toolsuite, but not by all user and password management tools.
+	  </para>
+	</listitem>
+      </varlistentry>
     </variablelist>
   </refsect1>