diff --git a/app/destinations/destination_edit.php b/app/destinations/destination_edit.php
index 90b9b89e71..2bb18f8e69 100644
--- a/app/destinations/destination_edit.php
+++ b/app/destinations/destination_edit.php
@@ -153,7 +153,7 @@
 		//check for duplicates
 			if ($destination_type == 'inbound' && $destination_number != $db_destination_number) {
 				$sql = "select count(*) from v_destinations ";
-				$sql .= "where destination_number = :destination_number ";
+				$sql .= "where (destination_number = :destination_number or destination_prefix || destination_number = :destination_number) ";
 				$sql .= "and destination_type = 'inbound' ";
 				$parameters['destination_number'] = $destination_number;
 				$database = new database;