diff --git a/debian/changelog b/debian/changelog
index 668ce82c..cf9ae624 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -14,6 +14,8 @@ shadow (1:4.1.4.3-1) UNRELEASED; urgency=low
   * debian/securetty.linux: Added support for embedded ARM AMBA PL011 ports
     (e.g. emulated by QEMU). Closes: #544184
   * debian/control: Removed Martin Quinson from the Uploaders, on his request.
+  * debian/login.defs: Improve documentation of USERGROUPS_ENAB.
+    Closes: #572687
 
  -- Nicolas FRANCOIS (Nekral) <nicolas.francois@centraliens.net>  Sun, 24 Jan 2010 18:28:33 +0100
 
diff --git a/debian/login.defs b/debian/login.defs
index bdb0972a..6456b528 100644
--- a/debian/login.defs
+++ b/debian/login.defs
@@ -224,10 +224,12 @@ DEFAULT_HOME	yes
 #USERDEL_CMD	/usr/sbin/userdel_local
 
 #
-# This enables userdel to remove user groups if no members exist.
+# If set to yes, userdel will remove the user´s group if it contains no
+# more members, and useradd will create by default a group with the name
+# of the user.
 #
 # Other former uses of this variable such as setting the umask when
-# user==primary group are not used in PAM environments, thus in Debian
+# user==primary group are not used in PAM environments, such as Debian
 #
 USERGROUPS_ENAB yes