diff --git a/sapl/sessao/forms.py b/sapl/sessao/forms.py
index e0215dd60..f259eebaf 100644
--- a/sapl/sessao/forms.py
+++ b/sapl/sessao/forms.py
@@ -1055,7 +1055,7 @@ class OrdemExpedienteLeituraForm(forms.ModelForm):
             [('observacao', 12)])   
 
         actions = [HTML('<a href="{{ view.cancel_url }}"'
-                        ' class="btn btn-dark">Cancelar</a>')]
+                        ' class="btn btn-warning">Cancelar Leitura</a>')]
 
         self.helper = SaplFormHelper()
         self.helper.form_method = 'POST'
diff --git a/sapl/sessao/views.py b/sapl/sessao/views.py
index 737406711..23348f751 100755
--- a/sapl/sessao/views.py
+++ b/sapl/sessao/views.py
@@ -4425,6 +4425,15 @@ class AbstractLeituraView(FormView):
         return url
 
     def cancel_url(self):
+        if self.expediente:
+            ordem_expediente = ExpedienteMateria.objects.get(id=self.kwargs['oid'])
+            RegistroLeitura.objects.filter(materia=ordem_expediente.materia, expediente=ordem_expediente).delete()
+        else:
+            ordem_expediente = OrdemDia.objects.get(id=self.kwargs['oid'])
+            RegistroLeitura.objects.filter(materia=ordem_expediente.materia, ordem=ordem_expediente).delete()
+        ordem_expediente.resultado = ""
+        ordem_expediente.votacao_aberta = False
+        ordem_expediente.save()
         return self.get_success_url()