diff --git a/cotisations/payment_methods/comnpay/aes_field.py b/cotisations/payment_methods/comnpay/aes_field.py
index 1329b0a7..9a59b148 100644
--- a/cotisations/payment_methods/comnpay/aes_field.py
+++ b/cotisations/payment_methods/comnpay/aes_field.py
@@ -7,6 +7,7 @@
 # Copyright © 2017  Goulven Kermarec
 # Copyright © 2017  Augustin Lemesle
 # Copyright © 2018  Maël Kervella
+# Copyright © 2018  Hugo Levy-Falk
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -22,10 +23,7 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-# App de gestion des machines pour re2o
-# Gabriel Détraz, Augustin Lemesle
-# Gplv2
-"""preferences.aes_field
+"""
 Module defining a AESEncryptedField object that can be used in forms
 to handle the use of properly encrypting and decrypting AES keys
 """
@@ -36,6 +34,7 @@ from random import choice
 from Crypto.Cipher import AES
 
 from django.db import models
+from django import forms
 from django.conf import settings
 
 EOD = '`%EofD%`'  # This should be something that will not occur in strings
@@ -66,6 +65,10 @@ def decrypt(key, s):
     return ss.split(bytes(EOD, 'utf-8'))[0]
 
 
+class AESEncryptedFormField(forms.CharField):
+    widget = forms.PasswordInput(render_value=True)
+
+
 class AESEncryptedField(models.CharField):
     """ A Field that can be used in forms for adding the support
     of AES ecnrypted fields """
@@ -92,3 +95,8 @@ class AESEncryptedField(models.CharField):
             settings.AES_KEY,
             value
         ))
+
+    def formfield(self, **kwargs):
+        defaults = {'form_class': AESEncryptedFormField}
+        defaults.update(kwargs)
+        return super().formfield(**defaults)