diff --git a/phpBB/includes/acp/auth.php b/phpBB/includes/acp/auth.php
index 3da19f5c0b..64421fcda7 100644
--- a/phpBB/includes/acp/auth.php
+++ b/phpBB/includes/acp/auth.php
@@ -465,7 +465,7 @@ class auth_admin extends auth
 
 					if ($s_role_options)
 					{
-						$s_role_options = '<option value="0"' . ((!$current_role_id) ? ' selected="selected"' : '') . '>' . $user->lang['NO_ROLE_ASSIGNED'] . '</option>' . $s_role_options;
+						$s_role_options = '<option value="0"' . ((!$current_role_id) ? ' selected="selected"' : '') . ' title="' . htmlspecialchars($user->lang['NO_ROLE_ASSIGNED_EXPLAIN']) . '">' . $user->lang['NO_ROLE_ASSIGNED'] . '</option>' . $s_role_options;
 					}
 
 					$template->assign_block_vars($tpl_pmask . '.' . $tpl_fmask, array(
@@ -523,7 +523,7 @@ class auth_admin extends auth
 
 					if ($s_role_options)
 					{
-						$s_role_options = '<option value="0"' . ((!$current_role_id) ? ' selected="selected"' : '') . '>' . $user->lang['SELECT_ROLE'] . '</option>' . $s_role_options;
+						$s_role_options = '<option value="0"' . ((!$current_role_id) ? ' selected="selected"' : '') . ' title="' . htmlspecialchars($user->lang['NO_ROLE_ASSIGNED_EXPLAIN']) . '">' . $user->lang['NO_ROLE_ASSIGNED'] . '</option>' . $s_role_options;
 					}
 
 					if (!$forum_id)
diff --git a/phpBB/language/en/acp/permissions.php b/phpBB/language/en/acp/permissions.php
index 67392a4cd5..be8d3f1cba 100644
--- a/phpBB/language/en/acp/permissions.php
+++ b/phpBB/language/en/acp/permissions.php
@@ -102,6 +102,7 @@ $lang = array_merge($lang, array(
 
 	'NO_AUTH_SETTING_FOUND'		=> 'Permission settings not defined.',
 	'NO_ROLE_ASSIGNED'			=> 'No role assigned...',
+	'NO_ROLE_ASSIGNED_EXPLAIN'	=> 'Setting to this role does not change permissions on the right. If you want to unset/remove all permissions you should use the "All Unset" link.',
 	'NO_ROLE_AVAILABLE'			=> 'No role available',
 	'NO_ROLE_NAME_SPECIFIED'	=> 'Please give the role a name.',
 	'NO_ROLE_SELECTED'			=> 'Role could not be found.',