diff --git a/ChangeLog b/ChangeLog
index 8ea8d6ee..2857f486 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-11-19  Nicolas François  <nicolas.francois@centraliens.net>
+
+	* man/gpasswd.1.xml: Document the difference between the -r and -R
+	options.
+
 2011-11-19  Nicolas François  <nicolas.francois@centraliens.net>
 
 	* man/useradd.8.xml, man/groupadd.8.xml, man/usermod.8.xml,
diff --git a/man/gpasswd.1.xml b/man/gpasswd.1.xml
index f19630a8..cf437a28 100644
--- a/man/gpasswd.1.xml
+++ b/man/gpasswd.1.xml
@@ -180,6 +180,7 @@
 	<listitem>
 	  <para>
 	    Remove the password from the named <replaceable>group</replaceable>.
+	    The group password will be empty.
 	    Only group members will be allowed to use
 	    <command>newgrp</command> to join the named
 	    <replaceable>group</replaceable>.
@@ -195,7 +196,8 @@
 	<listitem>
 	  <para>
 	    Restrict the access to the named <replaceable>group</replaceable>.
-	    Only group members will be allowed to use
+	    The group password is set to "!".
+	    Only group members with a password will be allowed to use
 	    <command>newgrp</command> to join the named
 	    <replaceable>group</replaceable>.
 	  </para>