diff --git a/sapl/parlamentares/models.py b/sapl/parlamentares/models.py
index 63177a734..1a4e29ac6 100644
--- a/sapl/parlamentares/models.py
+++ b/sapl/parlamentares/models.py
@@ -8,7 +8,8 @@ from model_utils import Choices
 from sapl.base.models import Autor
 from sapl.utils import (INDICADOR_AFASTAMENTO, UF, YES_NO_CHOICES,
                         SaplGenericRelation, intervalos_tem_intersecao,
-                        restringe_tipos_de_arquivo_img)
+                        restringe_tipos_de_arquivo_img,
+                        get_settings_auth_user_model)
 
 
 class Legislatura(models.Model):
@@ -501,7 +502,9 @@ class Frente(models.Model):
 class Votante(models.Model):
     parlamentar = models.ForeignKey(
         Parlamentar, verbose_name=_('Parlamentar'), related_name='parlamentar')
-    user = models.ForeignKey(User, verbose_name=_('User'), related_name='user')
+    user = models.ForeignKey(
+        get_settings_auth_user_model(),
+        verbose_name=_('User'), related_name='user')
     data = models.DateTimeField(
         verbose_name=_('Data'), auto_now_add=True,
         max_length=30, null=True, blank=True)
diff --git a/sapl/sessao/models.py b/sapl/sessao/models.py
index 369b5a0e2..9a5aae5cc 100644
--- a/sapl/sessao/models.py
+++ b/sapl/sessao/models.py
@@ -8,7 +8,8 @@ from sapl.materia.models import MateriaLegislativa
 from sapl.parlamentares.models import (CargoMesa, Legislatura, Parlamentar,
                                        Partido, SessaoLegislativa)
 from sapl.utils import (YES_NO_CHOICES, SaplGenericRelation,
-                        restringe_tipos_de_arquivo_txt, texto_upload_path)
+                        restringe_tipos_de_arquivo_txt, texto_upload_path,
+                        get_settings_auth_user_model)
 
 
 class CargoBancada(models.Model):
@@ -385,7 +386,7 @@ class VotoNominal(models.Model):
     sessao = models.ForeignKey(SessaoPlenaria)
     materia = models.ForeignKey(MateriaLegislativa)
 
-    user = models.ForeignKey(User)
+    user = models.ForeignKey(get_settings_auth_user_model())
     ip = models.CharField(verbose_name=_('IP'), max_length=30)
     data_hora = models.DateTimeField(
         verbose_name=_('Data/Hora'), auto_now_add=True)