diff --git a/preferences/models.py b/preferences/models.py
index 79cf60fc..ad667b43 100644
--- a/preferences/models.py
+++ b/preferences/models.py
@@ -37,10 +37,6 @@ import cotisations.models
 import machines.models
 
 from re2o.mixins import AclMixin
-
-
-from .aes_field import AESEncryptedField
-
 from datetime import timedelta