diff --git a/ajax.php b/ajax.php
index d6c97b0..aa8a8c7 100644
--- a/ajax.php
+++ b/ajax.php
@@ -2,6 +2,7 @@
 
 require_once('util4p/util.php');
 require_once('util4p/CRObject.class.php');
+require_once('util4p/Random.class.php');
 
 require_once('Code.class.php');
 require_once('Securer.class.php');
@@ -70,7 +71,7 @@ switch ($action) {
 
 	case 'job_submit':
 		$job = new CRObject();
-		$job->set('name', cr_get_POST('name', '') . '-' . time());
+		$job->set('name', cr_get_POST('name', '') . '-' . time() . Random::randomInt(1000, 9999));
 		$job->set('virtual_cluster', cr_get_POST('cluster'));
 		$job->set('workspace', cr_get_POST('workspace'));
 		$job->set('priority', cr_get_POST('priority'));