diff --git a/app/destinations/destination_edit.php b/app/destinations/destination_edit.php
index c90cb02b0d..8a35143f81 100644
--- a/app/destinations/destination_edit.php
+++ b/app/destinations/destination_edit.php
@@ -204,7 +204,7 @@
 			if (empty($destination_enabled)) { $msg .= $text['message-required']." ".$text['label-destination_enabled']."<br>\n"; }
 
 		//check for duplicates
-			if ($destination_type == 'inbound' && $destination_number != $db_destination_number && $settings->get('destinations', 'unique', '')) {
+			if ($action == 'add' && $destination_type == 'inbound' && $settings->get('destinations', 'unique', false)) {
 				$sql = "select count(*) from v_destinations ";
 				$sql .= "where (destination_number = :destination_number or destination_prefix || destination_number = :destination_number) ";
 				$sql .= "and destination_type = 'inbound' ";