diff --git a/sapl/base/receivers.py b/sapl/base/receivers.py
index b2176be14..1e402ffb0 100644
--- a/sapl/base/receivers.py
+++ b/sapl/base/receivers.py
@@ -1,6 +1,5 @@
 from django.db.models.signals import post_delete, post_save
 from django.dispatch import receiver
-
 from sapl.materia.models import Tramitacao
 from sapl.protocoloadm.models import TramitacaoAdministrativo
 from sapl.base.signals import tramitacao_signal
@@ -30,7 +29,7 @@ def handle_tramitacao_signal(sender, **kwargs):
 
 @receiver(post_delete)
 def status_tramitacao_materia(sender, instance, **kwargs):
-    if isinstance(sender, TramitacaoAdministrativo):
+    if isinstance(sender, Tramitacao):
         if instance.status.indicador == 'F':
             materia = instance.materia
             materia.em_tramitacao = True