diff --git a/modules/base/crawlReferralCli.php b/modules/base/crawlReferralCli.php
index 3a920802..72176a23 100644
--- a/modules/base/crawlReferralCli.php
+++ b/modules/base/crawlReferralCli.php
@@ -69,7 +69,10 @@ public function updateReferrer($id)
         $r = owa_coreAPI::entityFactory('base.referer');
         $r->load($id);
         $r->crawlReferer();
-        $r->update();
+        
+        if ( $r->isDirty() ) {
+        	$r->update();
+		}
     }
 
     public function updateAllReferrer()