diff --git a/admin/availabilitygroup.php b/admin/availabilitygroup.php
index 080cf329..011f9d52 100644
--- a/admin/availabilitygroup.php
+++ b/admin/availabilitygroup.php
@@ -69,6 +69,7 @@ global $db;
 
 xhtml_head(T_("Availability groups"),true,array("../css/table.css"),array("../js/window.js"));
 
+
 if (isset($_GET['availability_group']))
 {
 	$availability_group = $db->qstr($_GET['availability_group']);
@@ -88,6 +89,8 @@ $sql = "SELECT description,
 
 print "<h3>" . T_("Availability groups")."</h3>";
 
+print "<p>" . T_("Availability groups define periods of time of respondent availability.") . "</p>";
+
 if (empty($rs))
 	print "<p>" . T_("No availability groups") . "</p>";
 else