diff --git a/kfet/backends.py b/kfet/backends.py
index 62b2d820..3729f1bd 100644
--- a/kfet/backends.py
+++ b/kfet/backends.py
@@ -18,7 +18,7 @@ class KFetBackend(object):
             return None
 
         try:
-            password_sha256 = hashlib.sha256(password.encode()).hexdigest()
+            password_sha256 = hashlib.sha256(password.encode('utf-8')).hexdigest()
             account = Account.objects.get(password=password_sha256)
             user = account.cofprofile.user
         except Account.DoesNotExist:
diff --git a/kfet/views.py b/kfet/views.py
index 77bed012..6bd260a3 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -399,7 +399,7 @@ def account_update(request, trigramme):
                 if (request.user.has_perm('kfet.change_account_password')
                         and pwd_form.is_valid()):
                     pwd = pwd_form.cleaned_data['pwd1']
-                    pwd_sha256 = hashlib.sha256(pwd.encode()).hexdigest()
+                    pwd_sha256 = hashlib.sha256(pwd.encode('utf-8')).hexdigest()
                     Account.objects.filter(pk=account.pk).update(
                             password = pwd_sha256)
                     messages.success(request, 'Mot de passe mis à jour')