--- a/qrurls/models.py	Sat Sep 07 15:59:47 2013 +0300
+++ b/qrurls/models.py	Sat Sep 07 16:00:13 2013 +0300
@@ -223,7 +223,7 @@
             try:
                 return url_item[0]
             except IndexError:
-                raise DoesNotExist()
+                raise cls.DoesNotExist()
 
     @classmethod
     def get_url (cls, shorturl) :