diff --git a/pinaxcon/registrasion/models.py b/pinaxcon/registrasion/models.py
index 255370e..c8a2a1d 100644
--- a/pinaxcon/registrasion/models.py
+++ b/pinaxcon/registrasion/models.py
@@ -1,3 +1,4 @@
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 from django_countries.fields import CountryField