diff --git a/mailauth/contrib/user/models.py b/mailauth/contrib/user/models.py
index fc310c4..0574c2c 100644
--- a/mailauth/contrib/user/models.py
+++ b/mailauth/contrib/user/models.py
@@ -113,15 +113,13 @@ def anonymize(self, commit=True):
                     if commit:
                         self.save()
         """
+        signals.anonymize.send(sender=self.__class__, instance=self)
         self.email = None
         self.first_name = ""
         self.last_name = ""
         update_fields = ["email", "first_name", "last_name"]
         if commit:
             self.save(update_fields=update_fields)
-        signals.anonymize.send(
-            sender=self.__class__, instance=self, update_fields=tuple(update_fields)
-        )
         return update_fields
 
 
diff --git a/mailauth/contrib/user/signals.py b/mailauth/contrib/user/signals.py
index 3bfa2a1..0a562b3 100644
--- a/mailauth/contrib/user/signals.py
+++ b/mailauth/contrib/user/signals.py
@@ -4,6 +4,11 @@
 """
 Signal that is emitted when a user and all their data should be anonymized.
 
+The signal is emitted before the private date is delete on the instance,
+thus the receiver can still access the data. The receiver should usually
+not alter the instance, but only later related data. We recommend overriding
+the anonymize method to modify the instance.
+
 Usage::
 
     from django.dispatch import receiver
@@ -12,7 +17,7 @@
 
 
     @receiver(anonymize, sender=EmailUser)
-    def anonymize_user(sender, instance, update_fields, **kwargs):
+    def anonymize_user(sender, instance, **kwargs):
         # Do something with related user data
         instance.related_model.delete()
 
diff --git a/tests/contrib/auth/test_signals.py b/tests/contrib/auth/test_signals.py
index ef8c280..f2ec392 100644
--- a/tests/contrib/auth/test_signals.py
+++ b/tests/contrib/auth/test_signals.py
@@ -16,5 +16,4 @@ def test_anonymize(user):
         signal=anonymize,
         sender=user.__class__,
         instance=user,
-        update_fields=("email", "first_name", "last_name"),
     )