diff --git a/ChangeLog b/ChangeLog
index ecfa950c..47fd3136 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2013-08-15  Nicolas François  <nicolas.francois@centraliens.net>
+
+	* man/login.defs.d/SUB_GID_COUNT.xml: Document newusers behavior
+	when the user already have subordinate group IDs.
+	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
+	* man/login.defs.d/SUB_GID_COUNT.xml: Fix typo (MAX<->MIN).
+	* man/login.defs.d/SUB_UID_COUNT.xml: Likewise.
+
 2013-08-15  Nicolas François  <nicolas.francois@centraliens.net>
 
 	* src/usermod.c: Check early if /etc/subuid (/etc/subgid) exists
diff --git a/man/login.defs.d/SUB_GID_COUNT.xml b/man/login.defs.d/SUB_GID_COUNT.xml
index d8592e64..01ace007 100644
--- a/man/login.defs.d/SUB_GID_COUNT.xml
+++ b/man/login.defs.d/SUB_GID_COUNT.xml
@@ -33,14 +33,15 @@
   <listitem>
     <para>
       If <filename>/etc/subuid</filename> exists, the commands
-      <command>useradd</command> and <command>newusers</command> allocate
+      <command>useradd</command> and <command>newusers</command> (unless
+      the user already have subordinate group IDs) allocate
       <option>SUB_GID_COUNT</option> unused group IDs from the range
       <option>SUB_GID_MIN</option> to <option>SUB_GID_MAX</option> for each
       new user.
     </para>
     <para>
-      The default values for <option>SUB_GID_MAX</option>,
-      <option>SUB_GID_MIN</option>, <option>SUB_GID_COUNT</option>
+      The default values for <option>SUB_GID_MIN</option>,
+      <option>SUB_GID_MAX</option>, <option>SUB_GID_COUNT</option>
       are respectively 100000, 600100000 and 10000.
     </para>
   </listitem>
diff --git a/man/login.defs.d/SUB_UID_COUNT.xml b/man/login.defs.d/SUB_UID_COUNT.xml
index 8db10690..5ad812f7 100644
--- a/man/login.defs.d/SUB_UID_COUNT.xml
+++ b/man/login.defs.d/SUB_UID_COUNT.xml
@@ -33,14 +33,15 @@
   <listitem>
     <para>
       If <filename>/etc/subuid</filename> exists, the commands
-      <command>useradd</command> and <command>newusers</command> allocate
+      <command>useradd</command> and <command>newusers</command> (unless
+      the user already have subordinate user IDs) allocate
       <option>SUB_UID_COUNT</option> unused user IDs from the range
       <option>SUB_UID_MIN</option> to <option>SUB_UID_MAX</option> for each
       new user.
     </para>
     <para>
-      The default values for <option>SUB_UID_MAX</option>,
-      <option>SUB_UID_MIN</option>, <option>SUB_UID_COUNT</option>
+      The default values for <option>SUB_UID_MIN</option>,
+      <option>SUB_UID_MAX</option>, <option>SUB_UID_COUNT</option>
       are respectively 100000, 600100000 and 10000.
     </para>
   </listitem>